National Register of Historic Places
Connecticut
1,630 listed historic places in Connecticut, grouped by county.
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Fairfield County (297)
- Aaron Barlow HouseRedding · listed 1982
- Abijah Comstock HouseNew Canaan · listed 2017
- Agudath Sholem SynagogueStamford · listed 1995
- Arthur and Lyn Chivvis HouseNew Canaan · listed 2010
- Aspetuck Historic DistrictEaston · listed 1991
- Ball and Roller Bearing CompanyDanbury · listed 1989
- Barnum Institute of Science and HistoryBridgeport
- Barnum MuseumBridgeport · listed 1972
- Barnum/Palliser Historic DistrictBridgeport · listed 1982
- Bassickville Historic DistrictBridgeport · listed 1987
- Beardsley ParkBridgeport · listed 1999
- Beaven W. Mills HouseNew Canaan · listed 2010
- Benedict House and ShopRidgefield · listed 1998
- Benjamin Hait HouseStamford · listed 1978
- BERKSHIRE NO. 7Bridgeport · listed 1978
- Beth Israel SynagogueNorwalk · listed 1991
- Bikur Cholim SynagogueBridgeport · listed 1995
- Birdcraft SanctuaryFairfield · listed 1982
- Bishop, William D., Cottage Development Historic DistrictBridgeport · listed 1982
- Black Rock Gardens Historic DistrictBridgeport · listed 1990
- Black Rock Historic DistrictBridgeport · listed 1979
- Boothe HomesteadStratford · listed 1985
- Boston Post Road Historic DistrictDarien · listed 1982
- Bradley Edge Tool Company Historic DistrictWeston · listed 1995
- Bradley-Hubbell HouseEaston · listed 2003
- Bradley-Wheeler HouseWestport · listed 1984
- Branchville Railroad TenementRidgefield · listed 1982
- Breuer, Marcel, House IINew Canaan · listed 2010
- Bridge Street Historic DistrictWestport · listed 2018
- Bridgeport City HallBridgeport · listed 1977
- Bridgeport Downtown North Historic DistrictBridgeport · listed 1987
- Bridgeport Downtown South Historic DistrictBridgeport · listed 1987
- Bronson WindmillFairfield · listed 1971
- Brookfield Center Historic DistrictBrookfield Center · listed 1991
- Bush-Holley HouseGreenwich · listed 1988
- Byram SchoolGreenwich · listed 1990
- C. J. Starr Barn and Carriage HouseStamford · listed 1979
- Caleb Baldwin TavernNewtown · listed 2002
- Cannondale Historic DistrictWilton · listed 1992
- Capt. David Judson HouseStratford · listed 1973
- Cassidy HouseBridgeport · listed 2011
- Charles Ives HouseDanbury · listed 1976
- Chichester Road Historic DistrictNew Canaan · listed 2026
- Christ Episcopal Church and Tashua Burial GroundTrumbull · listed 2001
- Church of the Holy NameStamford · listed 1987
- Commodore Hull SchoolShelton · listed 1983
- Compo-Owenoke Historic DistrictWestport · listed 1991
- Connecticut Railway and Lighting Company Car BarnBridgeport · listed 1987
- Corinne and George Liston Jr. Tatum HouseNew Canaan · listed 2010
- Cos Cob Power StationGreenwich · listed 1990
- Cos Cob Railroad StationGreenwich · listed 1989
- Cosier-Murphy HouseNew Fairfield · listed 1991
- Cove Island HousesStamford · listed 1979
- Daniel and Esther Bartlett HouseRedding · listed 1993
- Daniel Basset HouseMonroe · listed 2002
- David Jr. and Sarah Webb HouseNew Canaan · listed 2011
- David Lambert HouseWilton · listed 1992
- David Mallett Jr. HouseTrumbull · listed 1986
- David Ogden HouseFairfield · listed 1979
- David Perry HouseBridgeport · listed 1984
- Deacon John Davenport HouseStamford · listed 1982
- Deacon's Point Historic DistrictBridgeport · listed 1992
- Division Street Historic DistrictBridgeport · listed 1982
- Downtown Bridgeport Historic DistrictBridgeport · listed 2025
- Downtown Stamford Historic DistrictStamford · listed 1983
- Downtown Stamford Historic District (Boundary Increase 2)Stamford · listed 2003
- Downtown Stamford Historic District (Boundary Increase)Stamford · listed 1985
- Dr. Harvey and Rhoda Wasserman HouseWeston · listed 2024
- Durisol HouseNew Canaan · listed 2010
- Eagle's NestBridgeport · listed 1979
- East Bridgeport Historic DistrictBridgeport · listed 1979
- East Main Street Historic DistrictBridgeport · listed 1985
- Ein Jacob (Ayn Yacob) SynagogueBridgeport · listed 1995
- Elinor and Sherman Ford HouseNew Canaan · listed 2010
- ELMER S. DAILEYBridgeport · listed 1978
- Enos Kellogg HouseNorwalk · listed 2012
- Ephraim Wheeler HouseStratford · listed 1992
- Fairfield County CourthouseBridgeport · listed 1982
- Fairfield County JailBridgeport · listed 1985
- Fairfield Hills Campus Historic DistrictNewtown · listed 2024
- Fairfield Historic DistrictFairfield · listed 1971
- Fairfield Railroad StationsFairfield · listed 1989
- First Baptist ChurchBridgeport · listed 1990
- First Presbyterian ChurchStamford · listed 2021
- First Presbyterian ChurchStamford
- Five Mile River Landing Historic DistrictNorwalk · listed 2009
- Fourth Ward Historic DistrictGreenwich · listed 2000
- Frederic Remington HouseRidgefield · listed 1966
- French FarmGreenwich · listed 1975
- Gallaher EstateNorwalk · listed 2011
- Gateway Village Historic DistrictBridgeport · listed 1990
- Georgetown Historic DistrictRedding · listed 1987
- Glenville Historic DistrictGreenwich · listed 2007
- Glenville SchoolGreenwich · listed 2003
- Glover HouseNewtown · listed 1982
- Godillot PlaceWestport · listed 1977
- Golden Hill Historic DistrictBridgeport · listed 1987
- Great Captain Island LighthouseGreenwich · listed 1991
- Green Farms SchoolWestport · listed 1991
- Greenfield Hill Grange #133Fairfield · listed 2008
- Greenfield Hill Historic DistrictGreenfield Hill · listed 1971
- Greens Ledge LighthouseRowayton · listed 1990
- Greenwich Avenue Historic DistrictGreenwich · listed 1989
- Greenwich Municipal Center Historic DistrictGreenwich · listed 1988
- Greenwich Point Historic DistrictGreenwich · listed 2021
- Greenwich Town HallGreenwich · listed 1987
- Greenwich YMCAGreenwich · listed 1996
- Greenwood Avenue Historic DistrictBethel · listed 1999
- Gustavus and Sarah T. Pike HouseStamford · listed 1990
- Hampton InnNew Canaan · listed 2004
- Hanford Davenport HouseNew Canaan · listed 1989
- Hattertown Historic DistrictNewtown · listed 1996
- Haviland and Elizabeth Streets-Hanford Place Historic DistrictNorwalk · listed 1988
- HearthstoneDanbury · listed 1987
- Hebrew Congregation of WoodmontMilford · listed 1995
- Hotel BeachBridgeport · listed 1978
- Housatonic River Railroad BridgeMilford-Stratford · listed 1987
- Hoyt-Barnum HouseStamford · listed 2018
- Hoyt-Burwell-Morse HouseNew Canaan · listed 2017
- Hubbard Heights Historic DistrictStamford · listed 2016
- Huntington Center Historic DistrictShelton · listed 2000
- Hurlbutt Street SchoolWilton · listed 1996
- Ida Tarbell HouseEaston · listed 1993
- Indian Harbor Yacht ClubGreenwich · listed 2010
- Isaac Davis and Marion Dalton Hall HouseNew Canaan · listed 2010
- Isaac Lewis HouseStratford · listed 1991
- James Swallen HouseNew Canaan · listed 2010
- Jennie Leeds Gardener CottageStamford · listed 2026
- John Glover HouseNewtown · listed 2001
- John Knap HouseStamford · listed 1979
- John Osborne HouseFairfield · listed 1987
- John Rider HouseDanbury · listed 1977
- John Rogers StudioNew Canaan · listed 1966
- Johnson, Philip, Glass HouseNew Canaan · listed 1997
- Jonathan Sturges HouseFairfield · listed 1984
- Joseph Loth Company BuildingNorwalk · listed 1984
- Josiah Wilcox HouseGreenwich · listed 1988
- Keeler TavernRidgefield · listed 1982
- Kettle Creek Historic DistrictWeston · listed 1995
- Kings Highway North Historic DistrictWEstport · listed 1998
- Knapp TavernGreenwich · listed 1977
- Lakeview Village Historic DistrictBridgeport · listed 1990
- Landis Gores HouseNew Canaan · listed 2002
- Le Roy Shirt Company FactoryNorwalk · listed 2012
- Lee, John Black, House INew Canaan · listed 2010
- Lewis June HouseRidgefield · listed 1984
- Linden ApartmentsStamford · listed 1983
- Little Bethel African Methodist Episcopal ChurchGreenwich · listed 2010
- Lockwood-Mathews MansionNorwalk · listed 1970
- Locust Avenue SchoolDanbury · listed 1985
- Long Ridge Village Historic DistrictStamford · listed 1987
- Long Ridge Village Historic District (Boundary Increase)Stamford · listed 2011
- Main Street BridgeStamford · listed 1987
- Main Street Historic DistrictDanbury · listed 1983
- Maplewood SchoolBridgeport · listed 1990
- March Route of Rochambeau's Army: Reservoir RoadNewtown · listed 2003
- March Route of Rochambeau's Army: Ridgebury RoadRidgefield · listed 2003
- Marina Park Historic DistrictBridgeport · listed 1982
- Marion Castle, Terre BonneStamford · listed 1982
- Marvin TavernWilton · listed 1984
- Mary and Eliza Freeman HousesBridgeport · listed 1999
- Maxwell E. Perkins HouseNew Canaan · listed 2004
- MeadowlandsDarien · listed 1987
- Meeker's HardwareDanbury · listed 1983
- Merritt ParkwayGreenwich · listed 1991
- Methodist Episcopal ChurchGreenwich · listed 1988
- Mianus River Railroad BridgeGreenwich · listed 1987
- Mill Cove Historic DistrictWestport · listed 1991
- Monroe Center Historic DistrictMonroe · listed 1977
- Morris and Rose Greenwald HouseWeston · listed 2024
- Murphy, Charles and Peggy HouseNew Canaan · listed 2010
- Nathan B. Booth HouseStratford · listed 1992
- Nathan B. Lattin FarmNewtown · listed 1990
- Nathaniel Curtis HouseStratford · listed 1982
- Nathaniel Wheeler Memorial FountainBridgeport · listed 1985
- Nathaniel Witherell Historic DistrictGreenwich · listed 2010
- National Hall Historic DistrictWestport · listed 1984
- New Haven Railroad Danbury TurntableDanbury · listed 2005
- New Mill and Depot Building, Hawthorne Woolen MillGreenwich · listed 1990
- New York Belting and Packing Co.Newtown · listed 1982
- Newtown Borough Historic DistrictNewtown · listed 1996
- Nichols Farms Historic DistrictTrumbull · listed 1987
- Norfield Historic DistrictWeston · listed 1991
- Norwalk City HallNorwalk · listed 1995
- Norwalk Green Historic DistrictNorwalk · listed 1987
- Norwalk Island LighthouseNorwalk · listed 1989
- Norwalk River Railroad BridgeSouth Norwalk · listed 1987
- Octagon HouseDanbury · listed 1973
- Octagon HouseStamford · listed 1979
- Old Town HallStamford · listed 1972
- Oysterman's RowNorwalk · listed 2010
- Palace and Majestic TheatersBridgeport · listed 1979
- Park ApartmentsBridgeport · listed 1990
- Peck Ledge LighthouseNorwalk · listed 1990
- Penfield Reef LighthouseBridgeport · listed 1990
- Pequonnock River Railroad BridgeBridgeport · listed 1987
- Perry Avenue BridgeNorwalk · listed 2006
- Peyton Randolph Bishop HouseBridgeport · listed 1987
- Phineas Chapman Lounsbury HouseRidgefield · listed 1975
- Pine Creek Park BridgeFairfield · listed 1992
- Plumb Memorial LibraryShelton · listed 1978
- Pond-Weed HouseDarien · listed 1978
- PRICILLA DAILEYBridgeport · listed 1978
- Putnam Hill Historic DistrictGreenwich · listed 1979
- Putnam Memorial State ParkRedding · listed 1970
- Railroad Avenue Industrial DistrictBridgeport · listed 1985
- Redding Center Historic DistrictRedding · listed 1992
- Remington City Historic DistrictBridgeport · listed 1990
- Remington Village Historic DistrictBridgeport · listed 1990
- RestmoreFairfield · listed 2009
- Rev. John Ely HouseBethel · listed 2001
- Revonah Manor Historic DistrictStamford · listed 1986
- Richard and Geraldine Hodgson HouseNew Canaan · listed 2005
- Ridgebury Congregational ChurchRidgebury · listed 1984
- Ridgefield Center Historic DistrictRidgefield · listed 1984
- River Road-Mead Avenue Historic DistrictGreenwich · listed 2014
- Riverside Avenue BridgeGreenwich · listed 1977
- Robinson, P., Fur Cutting CompanyDanbury · listed 1982
- Rock LedgeNorwalk · listed 1977
- Rosemary HallGreenwich · listed 1998
- Round Hill Historic DistrictGreenwich · listed 1996
- Rowayton Depot Historic DistrictNorwalk · listed 2019
- Samuel Ferris HouseGreenwich · listed 1989
- Sanford-Curtis-Thurber HouseNewtown · listed 2007
- Saugatuck River BridgeWestport · listed 1987
- Saugatuck River Railroad BridgeWestport · listed 1987
- Seaside InstituteBridgeport · listed 1982
- Seaside ParkBridgeport · listed 1982
- Seaside Village Historic DistrictBridgeport · listed 1990
- Seth Seelye HouseBethel · listed 1977
- Shambaugh HouseWestport · listed 1999
- Sherman Historic DistrictSherman · listed 1991
- Silvermine Center Historic DistrictNorwalk · listed 2009
- Sloan-Raymond-Fitch HouseWilton · listed 1982
- Sound Beach Railroad StationGreenwich · listed 1989
- South End Historic DistrictStamford · listed 1986
- South Main and Washington Streets Historic DistrictNorwalk · listed 1977
- South Main and Washington Streets Historic District (Boundary Increase II)Norwalk · listed 1999
- South Main and Washington Streets Historic District (Boundary Increase)Norwalk · listed 1985
- Southport Historic DistrictFairfield · listed 1971
- Southport Railroad StationsFairfield · listed 1989
- St. Andrew's Protestant Episcopal ChurchStamford · listed 1983
- St. Benedict's ChurchStamford · listed 1987
- St. John's Episcopal ChurchBridgeport · listed 1984
- St. John's Protestant Episcopal ChurchStamford · listed 1987
- St. Luke's ChapelStamford · listed 1987
- St. Mark’s Episcopal ChurchNew Canaan · listed 2021
- St. Mary's ChurchStamford · listed 1987
- Stamford Harbor LighthouseStamford · listed 1991
- Stephen Tyng Mather HouseDarien · listed 1966
- Sterling Block-Bishop ArcadeBridgeport · listed 1978
- Sterling Hill Historic DistrictBridgeport · listed 1992
- Sterling HomesteadStratford · listed 1976
- Stevenson Dam Hydroelectric PlantStevenson · listed 2000
- Stratfield Historic DistrictBridgeport · listed 1980
- Stratford Center Historic DistrictStratford · listed 1983
- Stratford Point LighthouseStratford · listed 1990
- Strickland Road Historic DistrictGreenwich · listed 1990
- Sturges-Wright HouseWestport · listed 2015
- Suburban ClubStamford · listed 1989
- Sylvanus Selleck GristmillGreenwich · listed 1990
- System HouseNew Canaan · listed 2010
- TarrywileDanbury · listed 1988
- The Allen HouseWestport · listed 2010
- The Lodges Historic DistrictNorwalk · listed 2020
- Thomas Hawley HouseMonroe · listed 1980
- Thomas Hyatt HouseRidgefield · listed 1984
- Thomas Lyon HouseGreenwich · listed 1977
- Titicus Hill Historic DistrictRidgefield · listed 2012
- Tongue Point LighthouseBridgeport · listed 1990
- Town HallWestport · listed 1982
- Turn-of-River BridgeStamford · listed 1987
- Umpawaug District SchoolRedding · listed 1988
- Union StationDanbury · listed 1986
- Unitarian-Universalist ChurchStamford · listed 1987
- United Congregational ChurchBridgeport · listed 1984
- United Illuminating Company BuildingBridgeport · listed 1985
- United States Post Office, Westport, ConnecticutWestport · listed 2012
- US Post Office-Bridgeport MainBridgeport · listed 1986
- US Post Office-Greenwich MainGreenwich · listed 1986
- US Post Office-South Norwalk MainNorwalk · listed 1986
- US Post Office-Stamford MainStamford · listed 1985
- Village CreekNorwalk · listed 2010
- Wall Street Historic DistrictNorwalk · listed 2009
- Waltersville SchoolBridgeport · listed 2025
- WavenyNew Canaan · listed 2019
- Weir, J. Alden, Farm Historic DistrictRidgefield · listed 1984
- West End Congregation-Achavath Achim SynagogueBridgeport · listed 1995
- West Mountain Historic DistrictRidgefield · listed 1984
- Westport Bank and Trust CompanyWestport · listed 2006
- Westport Center Historic DistrictWestport · listed 2016
- Whistleville Historic DistrictNorwalk · listed 2021
- Williams HouseNew Fairfield · listed 2014
- Willis N Mills HouseNew Canaan · listed 2010
- Wilmot Apartments Historic DistrictBridgeport · listed 1990
- Wilton Center Historic DistrictWilton · listed 1992
- Zion Lutheran ChurchStamford · listed 1987
Hartford County (449)
- A. Everett Austin Jr. HouseHartford · listed 1994
- Abraham Coult HouseGlastonbury · listed 2000
- Academy HallRocky Hill · listed 1977
- Aetna DinerHartford · listed 2021
- Alexander King HouseSuffield · listed 1976
- Allen Place-Lincoln Street Historic DistrictHartford · listed 2003
- Allen's Cider MillGranby · listed 1992
- Allyn Steele HouseWest Hartford · listed 1986
- Ambassador ApartmentsHartford · listed 2008
- Amos Bull HouseHartford · listed 1968
- Amos Eno HouseSimsbury · listed 1975
- Ann Street Historic DistrictHartford · listed 1983
- Apartment at 49-51 Spring StreetHartford · listed 1983
- ArmsmearHartford · listed 1966
- Arthur G. Pomeroy HouseHartford · listed 1982
- Asa Gillett HouseWest Hartford · listed 1986
- Asylum Avenue DistrictHartford · listed 1979
- Atwater Manufacturing CompanySouthington · listed 1988
- Avery Clark HouseSouthington · listed 1989
- Avon Congregational ChurchAvon · listed 1972
- B.P.O. Elks LodgeHartford · listed 1984
- Babb's BeachSuffield · listed 2006
- Barnes-Frost HouseSouthington · listed 1989
- Batterson BlockHartford · listed 1984
- Beardsley-Mix HouseWest Hartford · listed 1986
- Bedford-Garden Streets Historic DistrictHartford · listed 2023
- Belden, Horace, School and Central Grammar SchoolSimsbury · listed 1993
- Beleden HouseBristol · listed 1982
- Benjamin Colton HouseWest Hartford · listed 1986
- Benomi Case HouseWindsor · listed 1988
- Beth Hamedrash Hagodol SynagogueHartford · listed 1995
- Bigelow-Hartford Carpet MillsThompsonville · listed 1983
- Bigelow-Hartford Carpet Mills Historic DistrictEnfield · listed 1994
- Bissell Tavern-Bissell's Stage HouseWindsor · listed 1985
- Blakeslee Forging CompanySouthington · listed 1988
- Bloomfield Avenue Meeting HouseHartford · listed 2024
- Boce W. Barlow Jr. HouseHartford · listed 1994
- Brace, Moses-Uriah Cadwell HouseWest Hartford · listed 1986
- Bridge No. 455Suffield · listed 2004
- Bristol Girls' ClubBristol · listed 1987
- Bristol High SchoolBristol · listed 2018
- Broad Brook CompanyEast Windsor · listed 1985
- Broad Street Green Historic DistrictWindsor · listed 1999
- Brown TavernBurlington · listed 1972
- Buckingham Square DistrictHartford · listed 1977
- Buckingham Square Historic District (Boundary Increase)Hartford · listed 1982
- Building at 136-138 Collins StreetHartford · listed 1979
- Building at 142 Collins StreetHartford · listed 1979
- Building at 83-85 Sigourney StreetHartford · listed 1979
- Bulkeley BridgeHartford · listed 1993
- Burritt HotelNew Britain · listed 1983
- Bushnell ParkHartford · listed 1970
- Butler-McCook HomesteadHartford · listed 1971
- Buttolph-Williams HouseWethersfield · listed 1968
- Calvin Day HouseHartford · listed 1978
- Canton Center Historic DistrictCanton · listed 1997
- Capen-Clark Historic DistrictHartford · listed 1982
- Capewell Horse Nail CompanyHartford · listed 2000
- Capt. Benjamin Allyn II HouseWindsor · listed 1979
- Capt. Elisha Phelps HouseSimsbury · listed 1972
- Capt. James Loomis HouseWindsor · listed 1988
- Capt. Josiah Cowles HouseSouthington · listed 1989
- Capt. Nathaniel Hayden HouseWindsor · listed 1988
- Capt. Oliver Filley HouseBloomfield · listed 2007
- Capt. Samuel Woodruff HouseSouthington · listed 1989
- Case Brothers Historic DistrictManchester · listed 2009
- Cedar Hill CemeteryHartford · listed 1997
- Center Burying Yard, OldWest Hartford · listed 2002
- Central Avenue-Center Cemetery Historic DistrictEast Hartford · listed 1993
- Charles E. Beach HouseWest Hartford · listed 1990
- Charles H. Norton HousePlainville · listed 1976
- Charter Oak Bank BuildingHartford · listed 1978
- Charter Oak PlaceHartford · listed 1978
- Charter Oak Place (Boundary Increase)Hartford · listed 1982
- Cheney Brothers Historic DistrictManchester · listed 1978
- Cheney BuildingHartford · listed 1970
- Chevry Lomday Mishnayes SynagogueHartford · listed 1995
- Children's Village of the Hartford Orphan AsylumHartford · listed 1982
- Christ ChurchHartford · listed 1983
- Church of the Good Shepherd and Parish HouseHartford · listed 1975
- City Hall-Monument DistrictNew Britain · listed 1973
- Clara T. O'Connell SchoolBristol · listed 2017
- Clarence A. Bingham SchoolBristol · listed 2017
- Clark Brothers Factory No. 1Southington · listed 1988
- Clark Brothers Factory No. 2Southington · listed 1988
- Clay Hill Historic DistrictHartford · listed 1983
- Clay Hill Historic District (Boundary Increase)Hartford · listed 1984
- Col. James Loomis HouseWindsor · listed 1988
- Collins and Townley Streets DistrictHartford · listed 1979
- Collinsville Historic DistrictCollinsville · listed 1976
- Colt Industrial DistrictHartford · listed 1976
- Colt Industrial District (Boundary Increase)Hartford · listed 2003
- Commercial Trust Company BuildingNew Britain · listed 2009
- Commercial Trust Company BuildingNew Britain · listed 2009
- Congregational Church of PlainvillePlainville · listed 2012
- Congress StreetHartford · listed 1975
- Congress Street Historic District (Boundary Increase)Hartford · listed 1992
- Connecticut General Life Insurance Company HeadquartersBloomfield · listed 2010
- Connecticut State CapitolHartford · listed 1970
- Connecticut State Library and Supreme Court BuildingHartford · listed 1981
- Connecticut StatehouseHartford · listed 1966
- Copper Ledges and Chimney CrestBristol · listed 1992
- Curtisville Historic DistrictGlastonbury · listed 1992
- Daniel Hosmer HouseWest Hartford · listed 1986
- Daniel Payne HouseWindsor · listed 1988
- David Pinney House and BarnWindsor Locks · listed 1977
- David Pinney House and Barn (Boundary Increase)Windsor Locks · listed 1994
- Day HouseHartford · listed 1971
- Day-Taylor HouseHartford · listed 1975
- Deacon John Moore HouseWindsor · listed 1977
- Department Store Historic DistrictHartford · listed 1995
- Dillon BuildingHartford · listed 1982
- Downtown Main Street Historic DistrictEast Hartford · listed 1996
- Downtown New BritainNew Britain · listed 2016
- Downtown North Historic DistrictHartford · listed 2004
- Dr. Elizur Hale HouseGlastonbury · listed 1989
- Dr. Frank T. Simpson HouseHartford · listed 1993
- Dr. Henry Skelton HouseSouthington · listed 1989
- Dr. J. Porter HouseSouthington · listed 1989
- Drake Hill Road BridgeSimsbury · listed 1984
- East Granby Historic DistrictEast Granby · listed 1988
- East Weatogue Historic DistrictSimsbury · listed 1990
- East Windsor AcademyEast Windsor · listed 1998
- East Windsor Hill Historic DistrictSouth Windsor · listed 1986
- Ebenezer Evans HouseSouthington · listed 1989
- Ebenezer Grant HouseEast Windsor Hill · listed 1977
- Edward and Ann Moore HouseWindsor · listed 1988
- Edward L. Burnham FarmManchester · listed 1982
- Edward W. Morley HouseWest Hartford · listed 1975
- Eli Phelps HouseWindsor · listed 1988
- Elijah Mills HouseWindsor · listed 1985
- Elisha Seymour Jr. HouseWest Hartford · listed 1986
- Elizabeth ParkWest Hartford · listed 1983
- Elm Street Historic DistrictHartford · listed 1984
- Elm Street Historic DistrictRocky Hill · listed 1998
- Elmore HousesSouth Windsor · listed 1985
- Endee Manor Historic DistrictBristol · listed 1996
- Enfield CanalWindsor Locks · listed 1976
- Enfield Carnegie LibraryEnfield · listed 2025
- Enfield Historic DistrictEnfield · listed 1979
- Enfield Shakers Historic DistrictEnfield · listed 1979
- Enfield Town MeetinghouseEnfield · listed 1974
- Engine Company 1 Fire StationHartford · listed 1989
- Engine Company 15 Fire StationHartford · listed 1989
- Engine Company 16 Fire StationHartford · listed 1989
- Engine Company 2 Fire StationHartford · listed 1989
- Engine Company 6 Fire StationHartford · listed 1989
- Engine Company 9 Fire StationHartford · listed 1989
- Eno Memorial HallSimsbury · listed 1993
- Enoch Kelsey HouseNewington · listed 1982
- Ernest R. Burwell HouseBristol · listed 1992
- Erwin Home for Worthy and Indigent WomenNew Britain · listed 2002
- Ezekiel Kelsey HouseBerlin · listed 1977
- Ezekiel Phelps HouseEast Granby · listed 1982
- Ezekiel Woodruff HouseSouthington · listed 1989
- Fairfield Avenue Historic DistrictHartford · listed 2011
- Farmington Canal-New Haven and Northampton CanalSuffield · listed 1985
- Farmington Historic DistrictFarmington · listed 1972
- Farmington River Railroad BridgeWindsor · listed 1972
- Federal Hill Historic DistrictBristol · listed 1986
- First Church of ChristFarmington · listed 1975
- First Church of Christ and the Ancient Burying GroundHartford · listed 1972
- First Church ParsonageWindsor · listed 1988
- First Congregational Church of East Hartford and ParsonageEast Hartford · listed 1982
- First Lutheran Church of the ReformationNew Britain · listed 2010
- First National Bank BuildingHartford · listed 1984
- Footguard HallHartford · listed 1984
- Forestville Passenger StationBristol · listed 1978
- Former Fire StationWindsor · listed 1988
- Fourth Congregational ChurchHartford · listed 1982
- Francis Gillette HouseBloomfield · listed 1982
- Francis H. Holmes HouseNew Britain · listed 1984
- Frederick H. Cossitt LibraryGranby · listed 1988
- Frog HollowHartford · listed 1979
- Frog Hollow Historic District (Boundary Increase)Hartford · listed 1984
- Fuller Brush Company Factory ComplexHartford · listed 2025
- Garvan-Carroll Historic DistrictEast Hartford · listed 1991
- Gen. George Cowles HouseFarmington · listed 1982
- Gen. Martin Kellogg HouseNewington · listed 1987
- George G. Loomis HouseWindsor · listed 1988
- George King HouseSharon · listed 2006
- Gideon Welles HouseGlastonbury · listed 1970
- Giles Barber HouseWindsor · listed 1988
- Gilman-Hayden HouseEast Hartford · listed 1984
- Glastonbury Historic DistrictGlastonbury · listed 1984
- Glastonbury-Rock Hill Ferry Historic DistrictGlastonbury · listed 2005
- Goodwin BlockHartford · listed 1976
- Gordon Loomis HouseWindsor · listed 1988
- Gothic CottageSuffield · listed 1982
- Grace Church RectoryWindsor · listed 1988
- Granby Center Historic DistrictGranby · listed 1985
- Grandview Terrace BoulevardHartford · listed 2002
- Gridley-Parsons-Staples HomesteadFarmington · listed 1981
- H. D. Smith Company BuildingPlantsville · listed 1977
- Harriet Beecher Stowe HouseHartford · listed 1970
- Hart's Corner Historic DistrictBurlington · listed 1987
- Hartford & New Haven Railroad DepotWindsor · listed 1988
- Hartford & New Haven Railroad-Freight DepotWindsor · listed 1988
- Hartford ClubHartford · listed 1984
- Hartford Electric Light Company Maple Avenue Sub-StationHartford · listed 2000
- Hartford Golf Club Historic DistrictWest Hartford · listed 1986
- Hartford National Bank and TrustHartford · listed 2016
- Hartford Seminary FoundationHartford · listed 1982
- Hartford Special Machinery Company ComplexHartford · listed 2022
- Hartford Union StationHartford · listed 1975
- Hastings Hill Historic DistrictSuffield · listed 1979
- Hathaways StoreWindsor · listed 1988
- Hatheway HouseSuffield · listed 1975
- Hazardville Historic DistrictHazardville and vicinity · listed 1980
- Henry Barnard HouseHartford · listed 1966
- Henry Hooker HouseKensington · listed 1978
- Henry Magill HouseWindsor · listed 1988
- Heublein TowerSimsbury · listed 1983
- Hezekiah Chaffee HouseWindsor · listed 1972
- High Street Historic DistrictHartford · listed 1998
- Hill-SteadFarmington · listed 2021
- Hilltop FarmSuffield · listed 2005
- Hitchcock-Schwarzmann MillBurlington · listed 1977
- Horace H. Ellsworth HouseWindsor · listed 1988
- Hotel AmericaHartford · listed 2012
- House at 1010 Shuttle Meadow RoadSouthington · listed 1989
- House at 111 Maple AvenueWindsor · listed 1988
- House at 130 Hayden Station RoadWindsor · listed 1988
- House at 140 and 144 Retreat AvenueHartford · listed 1982
- House at 36 Forest StreetHartford · listed 1983
- House at 44 Court StreetWindsor · listed 1988
- House at 590 West StreetSouthington · listed 1989
- House at 736 Palisado AvenueWindsor · listed 1988
- House at 847 Main Street, NorthWest Hartford · listed 1986
- Hubbard ParkMeriden · listed 1997
- Hurwood CompanySouthington · listed 1988
- Hyde-St. John HouseHartford · listed 1977
- Icabod Bradley HouseSouthington · listed 1989
- Imlay and Laurel Streets DistrictHartford · listed 1979
- Ira Loomis Jr. HouseWindsor · listed 1988
- Isham-Terry HouseHartford · listed 1982
- James B. Colt HouseHartford · listed 1975
- James Butler HouseWest Hartford · listed 1986
- James Pratt Funeral ServiceHartford · listed 1979
- Jefferson-Seymour DistrictHartford · listed 1979
- John and Isabella Hooker HouseHartford · listed 1979
- John Fitch SchoolWindsor · listed 1986
- John Fuller HouseSuffield · listed 1982
- John Hollister HouseGlastonbury · listed 1972
- John Humphrey HouseSimsbury · listed 1990
- John Robbins HouseRocky Hill · listed 1988
- John Wells Jr. HouseWest Hartford · listed 1986
- John Wiard HouseBurlington · listed 1982
- Jonathan Root HouseSouthington · listed 1989
- Joseph Webb HouseWethersfield · listed 1966
- Jotham Woodruff HouseSouthington · listed 1989
- Judah Holcomb HouseGranby · listed 1988
- Judd and Root BuildingHartford · listed 1984
- Keney TowerHartford · listed 1978
- Kensington Grammar School-Jean E. Hooker High SchoolBerlin · listed 2012
- Kensington Soldier's MonumentBerlin · listed 2013
- Kimberly MansionGlastonbury · listed 1974
- King's Field HouseSuffield · listed 1982
- Lake Compounce CarouselSouthington · listed 1978
- Landers, Frary and Clark Ellis Street Plant Historic DistrictNew Britain · listed 2022
- Laurel and Marshall Streets DistrictHartford · listed 1979
- Levi B. Frost HouseSouthington · listed 1987
- Lewis Street BlockHartford · listed 1976
- Lewis-Zukowski HouseSuffield · listed 1990
- Little Hollywood Historic DistrictHartford · listed 1982
- Lucius Barbour HouseHartford · listed 1979
- Luman Andrews HouseSouthington · listed 1989
- Lyman HouseHartford · listed 1975
- Main Street Historic DistrictBristol · listed 1995
- Main Street Historic DistrictManchester · listed 1996
- Main Street Historic District No. 2Hartford · listed 1984
- Makens Bemont HouseEast Hartford · listed 1982
- Manchester Historic DistrictManchester · listed 2000
- Manchester Historic District (Boundary Increase)Manchester · listed 2001
- Mansuy and Smith Automobile Showroom BuildingHartford · listed 2016
- Marietta Canty HouseHartford · listed 2000
- Marion Historic DistrictSouthington · listed 1988
- Mark Twain HouseHartford · listed 1966
- Marlborough Congregational ChurchMarlborough · listed 1993
- Marlborough HouseBristol · listed 1993
- Marlborough TavernMarlborough · listed 1978
- Masonic TempleNew Britain · listed 1995
- Massacoe Forest PavilionSimsbury · listed 1986
- Mather HomesteadHartford · listed 1982
- MelroseEast Windsor · listed 2010
- Melrose Road BridgeEast Windsor · listed 1999
- Memorial HallWindsor Locks · listed 1987
- Meriden Avenue-Oakland Road Historic DistrictSouthington · listed 1988
- Metropolitan African Methodist Episcopal Zion ChurchHartford · listed 1994
- Montgomery, J.R., Company Industrial ComplexWindsor Locks · listed 2018
- Mount St. Joseph AcademyWest Hartford · listed 1983
- Municipal BuildingHartford · listed 1981
- Myers and Gross BuildingHartford · listed 1983
- Nathaniel Holcomb III HouseGranby · listed 1982
- Naubuc Avenue-Broad Street Historic DistrictEast Hartford · listed 1998
- Neiditz BuildingHartford · listed 2020
- New Britain Opera HouseNew Britain · listed 1977
- New Britain Public High School CampusNew Britain · listed 2015
- New Haven District CampgroundPlainville · listed 1980
- Newington Junction North Historic DistrictNewington · listed 1987
- Newington Junction Railroad DepotNewington · listed 1986
- Newington Junction South Historic DistrictNewington · listed 1987
- Newington Junction West Historic DistrictNewington · listed 1987
- Newington VA Hospital Historic DistrictNewington · listed 2022
- Noah Webster BirthplaceWest Hartford · listed 1966
- Noah Webster Memorial LibraryWest Hartford · listed 1981
- Nook Farm and Woodland Street DistrictHartford · listed 1979
- North-West SchoolHartford · listed 2010
- Northam Memorial Chapel and Gallup Memorial GatewayHartford · listed 1982
- Old Farm SchoolhouseBloomfield · listed 1972
- Old Newgate PrisonEast Granby · listed 1970
- Old North CemeteryHartford · listed 1998
- Old Wethersfield Historic DistrictWethersfield · listed 1970
- Oliver Ellsworth HomesteadWindsor · listed 1970
- Oliver W. Mills HouseWindsor · listed 1982
- Oxford-Whitney Streets Historic DistrictHartford · listed 2010
- Palisado Avenue Historic DistrictWindsor · listed 1987
- Parkside Historic DistrictHartford · listed 1984
- Parkville Historic DistrictHartford · listed 2015
- Patrick Murphy HouseWindsor · listed 1988
- Peck, Stow & Wilcox FactorySouthington · listed 1988
- Pequabuck BridgeFarmington · listed 1984
- Perkins-Clark HouseHartford · listed 1978
- Phoenix Life Insurance Company BuildingHartford · listed 2005
- Pine Grove Historic DistrictAvon · listed 1980
- Plantsville Historic DistrictSouthington · listed 1988
- Polish National HomeHartford · listed 1983
- Pratt Street Historic DistrictHartford · listed 1983
- Prospect Avenue Historic DistrictHartford · listed 1985
- Pultz & Walkley CompanySouthington · listed 1988
- Rev. John Wightman HouseSouthington · listed 1989
- Robert and Julia Darling HouseSimsbury · listed 1991
- Rockwell ParkBristol · listed 1987
- Rocky Hill Center Historic DistrictRocky Hill · listed 2007
- Rocky Hill Congregational ChurchRocky Hill · listed 1982
- Roger Butler HouseWethersfield · listed 1996
- Roswell Moore II HouseSouthington · listed 2005
- Rowe and Weed HousesGranby · listed 1978
- Royal Typewriter Company BuildingHartford · listed 1989
- Saint Anthony HallHartford · listed 1985
- Samuel Farnsworth HouseWest Hartford · listed 1986
- Samuel II Hayes HouseGranby · listed 1992
- Sarah Whitman Hooker HouseWest Hartford · listed 1979
- Second Church of ChristHartford · listed 1978
- Selah Barnes HouseSouthington · listed 1989
- Selden Brewer HouseEast Hartford · listed 1979
- Shade Swamp ShelterFarmington · listed 1986
- Sigourney Square DistrictHartford · listed 1979
- Sigourney Square Historic District (Boundary Increase II)Hartford · listed 2011
- Sigourney Square Historic District (Boundary Increase)Hartford · listed 1983
- Silas Deane HouseWethersfield · listed 1970
- Simsbury Bank and Trust Company BuildingSimsbury · listed 1986
- Simsbury Center Historic DistrictSimsbury · listed 1996
- Simsbury Railroad DepotSimsbury · listed 1976
- Simsbury TownhouseSimsbury · listed 1993
- Sisson-South Whitney Historic DistrictHartford · listed 2013
- Sloper-Wesoly HouseNew Britian · listed 1999
- Sophia Sweetland HouseWindsor · listed 1988
- South Congregational ChurchNew Britain · listed 1990
- South End Historic DistrictBristol · listed 2001
- South Glastonbury Historic DistrictGlastonbury · listed 1984
- South Glastonbury Historic District Boundary IncreaseGlastonbury · listed 2009
- South Green Historic DistrictHartford · listed 1977
- Southern New England Telephone Company BuildingHartford · listed 2004
- Southington Center Historic DistrictSouthington · listed 1989
- Southington Public LibrarySouthington · listed 1989
- Southwest District SchoolBloomfield · listed 1992
- Spencer HouseHartford · listed 1983
- St. John's Episcopal ChurchWarehouse Point · listed 1982
- St. John's Episcopal ChurchEast Hartford · listed 1983
- St. Mary's Parochial SchoolNew Britain · listed 1991
- St. Paul's Methodist Episcopal ChurchHartford · listed 1984
- Stackpole, Moore, and Tryon BuildingHartford · listed 1978
- Stafford Hollow Historic DistrictStafford · listed 1987
- Stanley-Whitman HouseFarmington · listed 1966
- Stanley-Woodruff-Allen HouseWest Hartford · listed 1986
- State Arsenal and ArmoryHartford · listed 1996
- Stephen Grannis HouseSouthington · listed 1989
- Stone BridgeHartford · listed 1985
- Stony Hill SchoolWindsor · listed 1988
- Sts. Cyril and Methodius ChurchHartford · listed 1983
- Suffield Historic DistrictSuffield · listed 1979
- Swift, M. and Sons CompanyHartford · listed 2013
- Tariffville Historic DistrictSimsbury · listed 1993
- Taylor Chapman HouseWindsor · listed 1988
- Temple Beth IsraelHartford · listed 1978
- Temple Beth IsraelWest Hartford · listed 1995
- Tephereth Israel SynagogueNew Britain · listed 1995
- Terry-Hayden HouseBristol · listed 1982
- Terry's Plain Historic DistrictSimsbury · listed 1993
- The Spanish HouseWest Hartford · listed 1979
- Timothy Dwight Mills HouseWindsor · listed 1988
- Timothy Goodman HouseWest Hartford · listed 1986
- Timothy Hart HouseSouthington · listed 1989
- Town BridgeCanton · listed 1999
- Townsend G. Treadway HouseBristol · listed 1991
- Treadwell HouseBurlington · listed 1982
- Trinity College Long Walk Historic DistrictHartford · listed 2024
- Trinity Methodist Episcopal ChurchNew Britain · listed 2007
- Tunxis Forest Headquarters HouseHartland · listed 1986
- Tunxis Forest Ski CabinHartland · listed 1986
- U. S. Post Office and Federal BuildingHartford · listed 1981
- Underwood Computing Machine Company FactoryHartford · listed 2010
- Union Baptist ChurchHartford · listed 1979
- Union Village Historic DistrictManchester · listed 2002
- Unni II Robbins HouseNewington · listed 2005
- Upper Albany Historic DistrictHartford · listed 1986
- Urbana Woodruff HouseSouthington · listed 1989
- US Post Office-Manchester MainManchester · listed 1986
- Valentine Wightman HouseSouthington · listed 1989
- Viets' TavernEast Granby · listed 1972
- Vine Street Apartment BuildingsHartford · listed 2012
- Wadsworth AtheneumHartford · listed 1970
- Walnut Hill DistrictNew Britain · listed 1975
- Walnut Hill ParkNew Britain · listed 1982
- Washington SchoolNew Britain · listed 1984
- Washington Street SchoolHartford · listed 1982
- Watkinson Juvenile Asylum and Farm SchoolHartford · listed 1995
- Webster Memorial BuildingHartford · listed 1982
- Webster, Horace, FarmhouseSouthington · listed 1977
- Welles-Shipman-Ward HouseSouth Glastonbury · listed 1977
- West Boulevard Historic DistrictHartford · listed 2007
- West End Historic DistrictNew Britain · listed 1998
- West End LibraryFarmington · listed 2000
- West End North Historic DistrictHartford · listed 1985
- West End South Historic DistrictHartford and West Hartford · listed 1985
- West Granby Historic DistrictGranby · listed 1992
- West Hill Historic DistrictWest Hartford · listed 1996
- West Street SchoolSouthington · listed 1988
- Wethersfield Avenue Car BarnHartford · listed 1983
- Whitfield Cowles HouseEast Granby · listed 2014
- Whiting HomesteadWest Hartford · listed 1987
- Whitman HouseWest Hartford · listed 1986
- Widows' HomeHartford · listed 1983
- Wilfred X. Johnson HouseHartford · listed 1994
- Willard HomesteadNewington · listed 1986
- William H. Harvey HouseWindsor · listed 1988
- William H. Thompson FarmsteadEast Windsor · listed 2003
- William I Jerome HouseBristol · listed 1987
- William L. Linke HouseHartford · listed 1983
- William Shelton HouseWindsor · listed 1988
- Williams, Austin F., Carriagehouse and HouseFarmington · listed 1998
- Williams, J. B., Co. Historic DistrictGlastonbury · listed 1983
- Windsor Avenue Congregational ChurchHartford · listed 1993
- Windsor Farms Historic DistrictSouth Windsor · listed 1986
- Windsor Locks Passenger StationWindsor Locks · listed 1975
- Woodbridge FarmsteadManchester · listed 1999
- Woodruff HouseSouthington · listed 1989
- Worthington Ridge Historic DistrictBerlin · listed 1989
Litchfield County (167)
- American Legion Forest CCC ShelterBarkhamsted · listed 1986
- Amos Baldwin HouseNorfolk · listed 2016
- Arah Phelps InnNorth Colebrook · listed 1971
- Barkhamsted Center Historic DistrictBarkhamsted · listed 1999
- Beckley FurnaceCanaan · listed 1978
- Bethlehem Green Historic DistrictBethlehem · listed 1982
- Boardman's BridgeNew Milford · listed 1976
- Braman CampNorfolk · listed 1982
- Bridge #2305Salisbury · listed 2007
- Bridge No. 560Cornwall · listed 2004
- Bridgewater Center Historic DistrictBridgewater · listed 2000
- Bull's BridgeKent · listed 1972
- Burlington-Harmony Hill Roads Historic DistrictHarwinton · listed 1996
- Burrall-Belden HouseCanaan · listed 2018
- Caleb Martin HouseBethlehem · listed 1996
- Calhoun-Ives Historic DistrictWashington · listed 1995
- Canaan Village Historic DistrictNorth Canaan · listed 1990
- Capt. Philo Beardsley HouseKent · listed 1979
- Capt. William Bull TavernLitchfield · listed 1983
- Carl F. Schoverling Tobacco WarehouseNew Milford · listed 1982
- Colebrook Center Historic DistrictColebrook · listed 1991
- Colebrook StoreColebrook · listed 1976
- Cornwall Bridge Railroad StationCornwall · listed 1972
- Cream Hill Agricultural SchoolWest Cornwall · listed 1976
- Cream Hill ShelterSharon · listed 1986
- David Sherman HouseWoodbury · listed 2002
- David Welch HouseMilton · listed 1984
- Downtown Torrington Historic DistrictTorrington · listed 1988
- East Plymouth Historic DistrictPlymouth · listed 1985
- Ebenezer Gay HouseSharon · listed 1979
- EsperanzaNew Hartford · listed 2002
- Ezekial Beardsley-David Hare House and StudioRoxbury · listed 2025
- Falls Village DistrictCanaan · listed 1979
- Farnum HouseNorfolk · listed 1982
- Flanders Historic DistrictKent · listed 1979
- Francis Jr. Benedict HouseNorfolk · listed 2002
- Frederick S. Sanford HouseBridgewater · listed 1989
- Fyler-Hotchkiss EstateTorrington · listed 1987
- Gilbert Clock FactoryWinchester · listed 1984
- Gillette's Grist MillTorrington · listed 1977
- Glebe HouseWoodbury · listed 1971
- Goshen Historic DistrictGoshen · listed 1982
- Gould HouseNorfolk · listed 1982
- Gov. Smith HomesteadSharon · listed 1982
- Harry O. Erikson Pavilion HallWashington · listed 2022
- Haystack Mountain TowerNorfolk · listed 1993
- Henry B. Bissell HouseLitchfield · listed 1990
- HillsideNorfolk · listed 1982
- Hine-Buckingham FarmsNew Milford · listed 2004
- Holabird HouseCanaan · listed 1982
- Hollister, Homestead, TheWashington · listed 2010
- Hose and Hook and Ladder Truck BuildingThomaston · listed 1982
- Hotchkissville Historic DistrictWoodbury · listed 1996
- Housatonic Railroad StationNew Milford · listed 1984
- Isaac Lawrence HouseCanaan · listed 1983
- J. Howard Catlin HouseLitchfield · listed 1993
- J. S. Halpine Tobacco WarehouseNew Milford · listed 1982
- Jabez Bacon HouseWoodbury · listed 1971
- James Alldis HouseTorrington · listed 1982
- James Pardee HouseSharon · listed 2003
- Jason Skinner HouseHarwinton · listed 1985
- John C. Coffing HouseSalisbury · listed 1990
- John Shepard HouseNorfolk · listed 1982
- Joseph Bellamy HouseBethlehem · listed 1982
- Kent Iron FurnaceKent · listed 1977
- Lakeville Historic DistrictSalisbury · listed 1996
- Lakeville ManorLakeville · listed 2014
- Leroy Anderson HouseWoodbury · listed 2012
- Lime Rock Historic DistrictSalisbury · listed 1984
- Lime Rock Park Race TrackSalisbury · listed 2009
- Litchfield Historic DistrictLitchfield · listed 1968
- Litchfield Historic DistrictLitchfield · listed 1978
- Litchfield-South Roads Historic DistrictHarwinton · listed 1996
- Lover's Leap BridgeNew Milford · listed 1976
- Low HouseNorfolk · listed 1984
- Maj. Gen. John Sedgwick HouseCornwall · listed 1992
- Mead CampNorfolk · listed 1982
- Merritt Beach & Son BuildingNew Milford · listed 1992
- Merryall Union Evangelical Society ChapelNew Milford · listed 1986
- Merwinsville HotelGaylordsville · listed 1977
- Migeon Avenue Historic DistrictTorrington · listed 2002
- Milton Center Historic DistrictMilton · listed 1986
- Minortown Road BridgeWoodbury · listed 2001
- Moseley House-FarmNorfolk · listed 1984
- Moses Camp HouseWinsted · listed 1984
- Moss HillNorfolk · listed 1982
- Mount Tom TowerWoodville · listed 1993
- Mulville HouseNorfolk · listed 1984
- Music MountainCanaan · listed 1987
- New Milford Center Historic DistrictNew Milford · listed 1986
- New Preston Hill Historic DistrictWashington · listed 1985
- Noble HouseNorfolk · listed 1984
- Norfolk Country Club HouseNorfolk · listed 1982
- Norfolk Downs ShelterNorfolk · listed 1984
- Norfolk Historic DistrictNorfolk · listed 1979
- Old Riverton InnBarkhamsted · listed 1992
- Oliver Wolcott HouseLitchfield · listed 1971
- Paugnut Forest Administration BuildingTorrington · listed 1986
- Peoples Forest MuseumBarkhamsted · listed 1986
- Phelps Farms Historic DistrictColebrook · listed 1983
- Philip Chapin HouseNew Hartford · listed 1977
- Pine Meadow Historic DistrictNew Hartford · listed 1996
- Plymouth Center Historic DistrictPlymouth · listed 1999
- Plymouth Center Historic District (Boundary Increase)Plymouth · listed 2000
- Rectory and Church of the Immaculate ConceptionNorfolk · listed 1982
- Red Mountain ShelterCornwall · listed 1986
- Reeve, Tapping, House and Law SchoolLitchfield · listed 1966
- Reynolds BridgeThomaston · listed 2004
- Riverton Historic DistrictRiverton · listed 2007
- Robbins Stoeckel HouseNorfolk · listed 1982
- Rock HallColebrook · listed 2010
- Rockwell HouseNorfolk · listed 1982
- Roderick Bryan HouseWatertown · listed 2000
- Roxbury CenterRoxbury · listed 1983
- Rumsey HallCornwall · listed 1990
- Rye HouseLitchfield · listed 2000
- Salisbury Center Historic DistrictSalisbury · listed 1997
- Samuel Forbes HomesteadEast Canaan · listed 1992
- Scoville Memorial LibrarySalisbury · listed 1982
- Scoville PowerhouseSalisbury · listed 1984
- Sharon Historic DistrictSharon · listed 1993
- Sharon Valley Historic DistrictSharon · listed 1982
- Skee's DinerTorrington · listed 2002
- Skilton Road BridgeWatertown · listed 1991
- Solomon Rockwell HouseWinsted · listed 1977
- South Canaan Congregational ChurchCanaan · listed 1983
- South SchoolTorrington · listed 1986
- Sports BuildingNorfolk · listed 1984
- St. Andrew's Episcopal ChurchWashington · listed 1994
- Starling Childs CampNorfolk · listed 1982
- Stephen and Helen Foster HouseCornwall · listed 2017
- Steward's House, Foreign Mission SchoolCornwall · listed 2016
- Sun TerraceNew Hartford · listed 1978
- Sunny Ridge Historic DistrictWashington · listed 1995
- Tamarack Lodge BungalowNorfolk · listed 1977
- Terryville WaterwheelPlymouth · listed 2002
- Thomaston Opera HouseThomaston · listed 1972
- Tom Thumb HouseNorfolk · listed 1984
- TopsmeadLitchfield · listed 1993
- Torringford Street Historic DistrictTorrington · listed 1991
- Torrington Fire Department HeadquartersTorrington · listed 1987
- Town Hall and District School No. 6Morris · listed 1987
- Trinity ChurchMilton · listed 1976
- Trinity ChurchThomaston · listed 1984
- Union Church/St. Paul's ChurchRiverton · listed 1985
- Union DepotNorth Canaan · listed 1972
- United Bank BuildingNew Milford · listed 1982
- Villa FriuliTorrington · listed 1991
- Warner TheatreTorrington · listed 1984
- Warren Congregational ChurchWarren · listed 1991
- Warrenton Woolen MillTorrington · listed 1987
- Washington Green Historic DistrictWashington · listed 1995
- Water Street Historic DistrictTorrington · listed 2003
- Watertown Center Historic DistrictWatertown · listed 2001
- West Cornwall BridgeWest Cornwall · listed 1975
- West End Commercial DistrictWinsted · listed 1990
- West Goshen Historic DistrictGoshen · listed 1987
- Wildman, E. A., & Co. Tobacco WarehouseNew Milford · listed 1988
- William Moore Jr. HouseBarkhamsted · listed 1999
- Winchester Soldiers' MonumentWinchester · listed 1984
- Winsted Green Historic DistrictWinsted · listed 1977
- Winsted Green National Register Historic District (Boundary Increase)Winsted · listed 1982
- Winsted Hosiery MillWinsted · listed 1985
- Winsted Water WorksWinchester · listed 2020
- Woodbury Historic District No. 1Woodbury · listed 1971
- Woodbury Historic District No. 2Woodbury · listed 1972
- World War I MemorialNorfolk · listed 1984
Middlesex County (123)
- Amasa Day HouseMoodus · listed 1972
- Ambrose Whittlesey HouseOld Saybrook · listed 1985
- Arrawanna BridgeMiddletown · listed 2004
- Belltown Historic DistrictEast Hampton · listed 1985
- Benjamin Bushnell FarmEssex · listed 1990
- Black Horse TavernOld Saybrook · listed 1978
- Bridge No. 1132Killingworth · listed 2004
- Bridge No. 1603Millington · listed 1993
- Bridge No. 1604Millington · listed 1993
- Bridge No. 1605Millington · listed 1993
- Broad Street Historic DistrictMiddletown · listed 1988
- Bushnell-Dickinson HouseOld Saybrook · listed 2013
- Caleb Pratt HouseEssex · listed 2024
- Camp BethelHaddam · listed 2007
- Centerbrook Congregational ChurchEssex · listed 1987
- Charles Daniels HouseChester · listed 1988
- CHRISTEEN (oyster sloop)Essex · listed 1991
- Church of the Holy Trinity and RectoryMiddletown · listed 1979
- Clinton Village Historic DistrictClinton · listed 1994
- Coite-Hubbard HouseMiddletown · listed 1978
- Commerce Street Historic DistrictClinton · listed 2024
- Comstock-Cheney HallIvoryton · listed 1982
- Comstock's BridgeEast Hampton · listed 1976
- Connecticut General Hospital for the InsaneMiddletown · listed 1985
- Connecticut Valley Hospital CemeteryMiddletown · listed 2018
- Connecticut Valley Railroad Roundhouse and Turntable SiteOld Saybrook · listed 1994
- Cypress CemeteryOld Saybrook · listed 2018
- D & H Scovil Industrial Historic DistrictHaddam · listed 2024
- Daniel and Mary Lee HousePortland · listed 1991
- David Lyman II HouseMiddlefield · listed 1986
- Deep River Freight StationDeep River · listed 1994
- Deep River Town HallDeep River · listed 1976
- Doane's Sawmill/Deep River Manufacturing CompanyWestbrook and Deep River · listed 1985
- DORIS (Sailing yacht)Deep River · listed 1984
- Dr. Ambrose Pratt HouseChester · listed 1972
- East Haddam Historic DistrictEast Haddam · listed 1983
- Edward Augustus Russell HouseMiddletown · listed 1982
- Elisha Bushnell HouseOld Saybrook · listed 1978
- Emmanuel ChurchKillingworth · listed 1999
- Essex Freight StationCenterbrook · listed 1994
- Fenwick Historic DistrictFenwick · listed 1995
- Gen. William Hart HouseOld Saybrook · listed 1972
- Goodspeed Opera HouseEast Haddam · listed 1971
- Haddam Center Historic DistrictHaddam · listed 1989
- Hadlyme North Historic DistrictEast Haddam · listed 1988
- Higganum Landing Historic DistrictHaddam · listed 2018
- High Street Historic DistrictClinton · listed 2020
- Highland Historic DistrictMiddletown · listed 1982
- Hill's AcademyEssex · listed 1985
- Hubbell Carter HouseClinton · listed 2018
- Humphrey Pratt TavernOld Saybrook · listed 1972
- Indian Hill Avenue Historic DistrictPortland · listed 1983
- Ivoryton Historic DistrictEssex · listed 2014
- Jacob Pledger HouseMiddletown · listed 1982
- James Hazelton HouseHaddam · listed 1988
- James PharmacyOld Saybrook · listed 1994
- Jedidiah Dudley HouseOld Saybrook · listed 1982
- John Whittlesey Jr. HouseOld Saybrook · listed 1984
- Jonathan Warner HouseChester · listed 1978
- Lay-Pritchett HouseWestbrook · listed 1978
- Little Haddam Historic DistrictEast Haddam · listed 1996
- Lynde Point LighthouseOld Saybrook · listed 1990
- Main Street Historic DistrictMiddletown · listed 1983
- Main Street Historic DistrictCromwell · listed 1985
- Main Street Historic DistrictDurham · listed 1986
- Marlborough Street Historic DistrictPortland · listed 2012
- Metro South Historic DistrictMiddletown · listed 1980
- Middle Haddam Historic DistrictMiddle Haddam · listed 1984
- Middle Haddam SchoolEast Hampton · listed 2019
- Middletown Alms HouseMiddletown · listed 1982
- Middletown South Green Historic DistrictMiddletown · listed 1975
- Middletown Upper Houses Historic DistrictCromwell · listed 1979
- Millington Green Historic DistrictEast Haddam · listed 1996
- Nehemiah Hubbard HouseMiddletown · listed 1982
- North Cove Historic DistrictOld Saybrook · listed 1994
- Oak LodgeKillingworth · listed 1986
- Old Middletown High SchoolMiddletown · listed 1985
- Old Saybrook South GreenOld Saybrook · listed 1976
- Old Saybrook Town Hall and TheaterOld Saybrook · listed 2007
- Old Town HallChester · listed 1972
- Parker HouseOld Saybrook · listed 1978
- Parmelee HouseKillingworth · listed 2007
- Plumb HouseMiddletown · listed 1978
- Portland Brownstone QuarriesPortland · listed 2000
- Pratt HouseEssex · listed 1985
- Pratt, Read and Company Factory ComplexDeep River · listed 1984
- Rapallo ViaductEast Hampton · listed 1986
- Richard IV Alsop HouseMiddletown · listed 1970
- Russell Company Upper MillMiddletown · listed 1986
- Sage-Kirby HouseCromwell · listed 1982
- Saint Luke's Home for Destitute and Aged WomenMiddletown · listed 1982
- Samuel Eliot HouseOld Saybrook · listed 1972
- Samuel Wadsworth Russell HouseMiddletown · listed 1970
- Sanseer MillMiddletown · listed 1986
- Saybrook Breakwater LighthouseOld Saybrook · listed 1990
- Seth Wetmore HouseMiddletown · listed 1970
- Seventh SisterEast Haddam · listed 1986
- Shore Line Electric Railway PowerhouseOld Saybrook · listed 2019
- Starr MillMiddletown · listed 1993
- Starr Mill Road BridgeMiddletown · listed 1993
- Steamboat Dock SiteEssex · listed 1982
- The Eclectic HouseMiddletown · listed 2013
- Thomas Lyman HouseDurham · listed 1975
- Town Farms InnMiddletown · listed 1979
- U.S. Post OfficeMiddletown · listed 1982
- Villa Bella VistaChester · listed 2000
- Wadsworth Estate Historic DistrictMiddletown · listed 1996
- Warner HouseEast Haddam · listed 1987
- Washington Street Historic DistrictMiddletown · listed 1985
- Westbrook Town Center Historic DistrictWestbrook · listed 2017
- White-Overton-Callander HousePortland · listed 2014
- Wickham Road Historic DistrictEast Haddam · listed 1996
- Wilcox, Crittenden MillMiddletown · listed 1986
- William and Mary Ward HouseMiddletown · listed 2021
- William Stevens HouseClinton · listed 1985
- William Tully HouseOld Saybrook · listed 1982
- William Ward Jr. HouseMiddlefield · listed 1988
- Williams and Stancliff Octagon HousesPortland · listed 1976
- Williams, Captain Benjamin HouseMiddletown · listed 1978
- Woodrow Wilson High SchoolMiddletown · listed 1986
- Working Girls' Vacation Society Historic DistrictEast Haddam · listed 1994
- Xi Chapter, Psi Upsilon FraternityMiddletown · listed 2009
- YMCA of Northern Middlesex CountyMiddletown · listed 2023
New Haven County (274)
- Aaron Bronson HouseSouthbury · listed 1993
- Academy of Our Lady of Mercy at Lauralton HallMilford · listed 2011
- Acadian HouseGuilford · listed 1975
- Aeolian Company Factory ComplexMeriden · listed 2023
- Ahavas Sholem SynagogueNew Haven · listed 1995
- Allis-Bushnell HouseMadison · listed 1982
- Alphonso Johnson HouseHamden · listed 1992
- American Mills Web ShopWest Haven · listed 1983
- Ansonia LibraryAnsonia · listed 1985
- Armstrong Rubber Company BuildingNew Haven · listed 2021
- Armstrong, M. and Company Carriage FactoryNew Haven · listed 2011
- Atwater-Linton HouseHamden · listed 1992
- Bank Street Historic DistrictWaterbury · listed 1983
- Beaver Hills Historic DistrictNew Haven · listed 1986
- Benedict-Miller HouseWaterbury · listed 1981
- Beth El SynagogueWaterbury · listed 1995
- Beth Israel SynagogueNew Haven · listed 1995
- Birmingham Green Historic DistrictDerby · listed 2000
- Bishop SchoolWaterbury · listed 1982
- Blackstone HouseBranford · listed 1988
- Branford Center Historic DistrictBranford · listed 1987
- Branford Electric Railway Historic DistrictBranford · listed 1983
- Branford Point Historic DistrictBranford · listed 1988
- Bronson B. Tuttle HouseNaugatuck · listed 1990
- Buckingham HouseMilford · listed 1977
- Bullet Hill SchoolSouthbury · listed 1972
- Canoe Brook Historic DistrictBranford · listed 2002
- Caroline Nicoll HouseNew Haven · listed 1983
- Center Street CemeteryWallingford · listed 1997
- Chapel Street Historic DistrictNew Haven · listed 1984
- Charter Oak FirehouseMeriden · listed 1994
- Chatfield FarmsteadWoodbridge · listed 2010
- Cheshire Historic DistrictCheshire · listed 1986
- Christ Church New HavenNew Haven · listed 2009
- Col. Asa Platt HouseOrange · listed 2002
- Colony Street-West Main Street Historic DistrictMeriden · listed 1987
- Congregation Mishkan IsraelHamden · listed 2021
- Connecticut Agricultural Experiment StationNew Haven · listed 1966
- Connecticut Hall, Yale UniversityNew Haven · listed 1966
- Curtis Memorial LibraryMeriden · listed 1981
- David Hotchkiss HouseProspect · listed 1981
- Depot Street BridgeBeacon Falls · listed 2007
- Dixwell Avenue Congregational United Church of ChristNew Haven · listed 2018
- Downtown Seymour Historic DistrictSeymour · listed 1983
- Downtown Waterbury Historic DistrictWaterbury · listed 1983
- Dr. Andrew Castle HouseWoodbridge · listed 2000
- Dr. Mary B. Moody HouseNew Haven · listed 2017
- Dudley Farm Historic DistrictGuilford · listed 2023
- Dudleytown Historic DistrictGuilford · listed 1991
- Dwight Street Historic DistrictNew Haven · listed 1983
- East Haven Green Historic DistrictEast Haven · listed 2002
- East Haven High SchoolEast Haven · listed 2020
- East Rock ParkNew Haven · listed 1997
- EdgertonNew Haven · listed 1988
- Edgewood Park Historic DistrictNew Haven · listed 1986
- Edward Frisbie HomesteadBranford · listed 1985
- Edward Frisbie HouseBranford · listed 1988
- Eells-Stow HouseMilford · listed 1977
- Elam Ives HouseHamden · listed 2010
- Eliphalet Howd HouseBranford · listed 1988
- Elisha Blackman BuildingNew Haven · listed 1978
- Elisha Pitkin HouseGuilford · listed 1979
- Elizabeth R. Hooker HouseNew Haven · listed 2010
- Elton HotelWaterbury · listed 1983
- Falkner's Island LighthouseGuilford · listed 1990
- Farmington Canal LockCheshire · listed 1973
- Farmington Canal Lock No. 13Hamden · listed 1982
- First Congregational Church of CheshireCheshire · listed 1973
- First Congregational Church of East HavenEast Haven · listed 1982
- Five Mile Point LighthouseNew Haven · listed 1990
- Fort Nathan HaleNew Haven · listed 1970
- Fourth District SchoolNorth Branford · listed 1985
- Franklin Johnson HouseWallingford · listed 1998
- Gen. David Humphreys HouseAnsonia · listed 1972
- George A. and Jennie Curtis Fay HouseMeriden · listed 2025
- George Atwater HouseHamden · listed 1992
- George Baldwin HouseNorth Branford · listed 1977
- George S. Abbott BuildingWaterbury · listed 1982
- George W. Crawford ManorNew Haven · listed 2015
- Goffe Street Special School for Colored ChildrenNew Haven · listed 1979
- Griswold HouseGuilford · listed 1975
- Grove Street CemeteryNew Haven · listed 1997
- Guilford Historic Town CenterGuilford · listed 1976
- Hall-Benedict Drug Company BuildingNew Haven · listed 1986
- Hamden Bank & Trust BuildingHamden · listed 1990
- Hamden High SchoolHamden · listed 1994
- Hamden Memorial Town HallHamden · listed 2001
- Hamilton ParkWaterbury · listed 1996
- Harcourt Wood Memorial LibraryDerby · listed 1982
- Henry F. Miller HouseOrange · listed 2001
- Henry Whitfield HouseGuilford · listed 1972
- Henry Whitfield HouseGuilford · listed 1997
- Hezekiah Palmer HouseBranford · listed 1988
- Hibbard, Enoch, House and Grannis, George, HouseWaterbury · listed 1979
- Hillhouse Avenue Historic DistrictNew Haven · listed 1985
- Hillside Historic DistrictWaterbury · listed 1987
- Home Woolen CompanyBeacon Falls · listed 1984
- House at 161 Damascus RoadBranford · listed 1988
- House at 29 Flat Rock RoadBranford · listed 1988
- Howard Avenue Historic DistrictNew Haven · listed 1985
- Howd-Linsley HouseNorth Branford · listed 1986
- Hurley Road Historic DistrictSouthbury · listed 1993
- Hyland-Wildman HouseGuilford · listed 1976
- Imperial Granum-Joseph Parker BuildingsNew Haven · listed 1986
- Isaac C. Lewis CottageBranford · listed 1997
- Isaac Hoadley HouseBranford · listed 1988
- Isaac Palmer HouseBranford · listed 1988
- Ives-Baldwin HouseMeriden · listed 2003
- James Alexis Darling HouseWoodbridge · listed 2020
- James Dwight Dana HouseNew Haven · listed 1966
- Jared Eliot HouseGuilford · listed 1985
- John Barker HouseWallingford · listed 1974
- John Cook HouseNew Haven · listed 1983
- John Hoadley HouseBranford · listed 1988
- John I. Howe HouseDerby · listed 1989
- John Kendrick HouseWaterbury · listed 1982
- John Rogers HouseBranford · listed 1988
- John Tyler HouseBranford · listed 1988
- Jonathan Dickerman II HouseHamden · listed 1982
- Jonathan Murray HouseMadison · listed 1982
- Joseph Blakeslee HouseWallingford · listed 1998
- Josiah Bronson HouseMiddlebury · listed 1982
- Kraus Corset FactoryDerby · listed 1987
- Lafayette B. Mendel HouseNew Haven · listed 1976
- Laurel Beach CasinoMilford · listed 2018
- Lewis Fulton Memorial ParkWaterbury · listed 1990
- Lighthouse Point CarouselNew Haven · listed 1983
- Lincoln TheatreNew Haven · listed 1984
- Long Wharf PierNew Haven · listed 2024
- Madison Green Historic DistrictMadison · listed 1982
- Matthews and Willard FactoryWaterbury · listed 1988
- Medad Stone TavernGuilford · listed 2009
- Meeting House Hill Historic DistrictGuilford · listed 1987
- Meigs-Bishop HouseMadison · listed 1988
- Meriden Curtain Fixture Company FactoryMeriden · listed 1986
- Middlebury Center Historic DistrictMiddlebury · listed 1985
- Milford Point HotelMilford · listed 1988
- Morris Cove Historic DistrictNew Haven · listed 2018
- Morris HouseNew Haven · listed 1972
- Mory'sNew Haven · listed 2005
- Moses Andrews HouseMeriden · listed 1978
- Mount Carmel Congregational Church and Parish HouseHamden · listed 1991
- Nathaniel Richardson HouseMiddlebury · listed 1977
- Naugatuck Center Historic DistrictNaugatuck · listed 1999
- Nehemiah Royce HouseWallingford · listed 1998
- New Haven ArmoryNew Haven · listed 2021
- New Haven City HallNew Haven · listed 1975
- New Haven Clock Company FactoryNew Haven · listed 2017
- New Haven County CourthouseNew Haven · listed 2003
- New Haven Green Historic DistrictNew Haven · listed 1970
- New Haven Jewish Home for the AgedNew Haven · listed 1979
- New Haven Lawn ClubNew Haven · listed 2003
- New Haven Railroad StationNew Haven · listed 1975
- Ninth Square Historic DistrictNew Haven · listed 1984
- Norcross Brothers Granite QuarryBranford · listed 2003
- North Branford Center Historic DistrictNorth Branford · listed 1999
- Northford CenterNorth Branford · listed 2002
- Norton HouseBranford · listed 1988
- Old West Haven High SchoolWest Haven · listed 1985
- Orange Center Historic DistrictOrange · listed 1989
- Orange Street Historic DistrictNew Haven · listed 1985
- Orange Street Historic District (Boundary Increase)New Haven · listed 2017
- Orrin Hoadley HouseBranford · listed 1988
- Orrin Todd HouseHamden · listed 1991
- OsbornedaleDerby · listed 1986
- Othniel C. Marsh HouseNew Haven · listed 1966
- Overlook Historic DistrictWaterbury · listed 1988
- Oyster Point Historic DistrictNew Haven · listed 1989
- Palace TheaterWaterbury · listed 1983
- Pelatiah Leete HouseGuilford · listed 1974
- Pine Orchard Union ChapelBranford · listed 2000
- Pines Bridge Historic DistrictNorth Haven · listed 1988
- Pistol Factory DwellingHamden · listed 1991
- Plaster HouseSouthbury · listed 1993
- Plymouth Congregational ChurchNew Haven · listed 1983
- Prospect Green Historic DistrictProspect · listed 2000
- Prospect Hill Historic DistrictNew Haven · listed 1979
- Quaker Farms Historic DistrictOxford · listed 1991
- Quinnipiac BreweryNew Haven · listed 1983
- Quinnipiac River Historic DistrictNew Haven · listed 1984
- RaynhamNew Haven · listed 1980
- Red BridgeMeriden · listed 1993
- Reuben Curtiss HouseSouthbury · listed 1993
- Richard Mansfield HouseAnsonia · listed 1971
- Rising Sun TavernNorth Haven · listed 1979
- River Park Historic DistrictMilford · listed 1986
- River Street Historic DistrictNew Haven · listed 1989
- Riverside CemeteryWaterbury · listed 1988
- Route 146 Historic DistrictBranford · listed 1990
- Russell Henry Chittenden HouseNew Haven · listed 1975
- Russian Village Historic DistrictSouthbury · listed 1988
- Sabbathday HouseGuilford · listed 1975
- Salem SchoolNaugatuck · listed 1983
- Samuel Beach HouseBranford · listed 1988
- Samuel Parsons HouseWallingford · listed 1982
- Samuel Simpson HouseWallingford · listed 1986
- Sanford Road Historic DistrictSouthbury · listed 1993
- Sanford-Humphreys HouseSeymour · listed 1982
- Schlaraffia BurgNew Haven · listed 2007
- Seymour High School and AnnexSeymour · listed 1983
- Sheffield Street BridgeWaterbury · listed 2001
- Shelley HouseMadison · listed 1989
- Short Beach Historic DistrictBranford · listed 2019
- Sleeping Giant TowerHamden · listed 1986
- Solomon Goffe HouseMeriden · listed 1979
- Solomon Tyler HouseBranford · listed 1988
- South Britain Historic DistrictSouthbury · listed 1987
- Southbury Historic District No. 1Southbury · listed 1971
- Southbury Training SchoolSouthbury · listed 1992
- Southern New England Telephone Company Adminstrative BuildingNew Haven · listed 1997
- Southwest District SchoolWolcott · listed 1982
- Southwest Ledge LighthouseNew Haven · listed 1990
- St. Luke's Episcopal ChurchNew Haven · listed 2003
- St. Peter's Episcopal ChurchMilford · listed 1979
- Stapleton BuildingWaterbury · listed 1988
- State Park Supply YardMadison · listed 1986
- Sterling Opera HouseDerby · listed 1968
- Stick Style House at Stony CreekBranford · listed 1972
- Stony Creek-Thimble Islands Historic DistrictBranford · listed 1988
- Stratford Shoal LighthouseNew Haven · listed 1990
- Strouse, Adler Company Corset FactoryNew Haven · listed 2002
- Swain-Harrison HouseBranford · listed 1975
- Taylor Memorial LibraryMilford · listed 1979
- Theophilus Jones HouseWallingford · listed 1992
- Thomas Burgis II HouseGuilford · listed 2000
- Thomas Darling House and TavernWoodbridge · listed 1979
- Thomas Harrison HouseBranford · listed 1988
- Timothy Baldwin HouseBranford · listed 1988
- Timothy Bradley HouseBranford · listed 1988
- Tranquility FarmMiddlebury · listed 1982
- Trowbridge Square Historic DistrictNew Haven · listed 1985
- Tunxis Hose FirehouseUnionville · listed 1983
- Union SchoolWest Haven · listed 1987
- United States Post Office and Court HouseNew Haven · listed 2015
- Upper Main Street Historic DistrictAnsonia · listed 1982
- Upper State Street Historic DistrictNew Haven · listed 1984
- US Post Office-Ansonia MainAnsonia · listed 1985
- US Post Office-Meriden MainMeriden · listed 1986
- US Post Office-Milford MainMilford · listed 1986
- US Post Office-Naugatuck MainNaugatuck · listed 1986
- Vincent J. and Susannah K. Scully HouseWoodbridge · listed 2025
- Wallingford Center Historic DistrictWallingford · listed 1993
- Wallingford Railroad StationWallingford · listed 1993
- Ward-Heitman HouseWest Haven · listed 2003
- Warham Williams HouseNorthford · listed 1971
- Washington Avenue BridgeWaterbury · listed 2001
- Washington BridgeMilford · listed 2004
- Waterbury Brass MillWaterbury · listed 1975
- Waterbury Clock CompanyWaterbury · listed 1982
- Waterbury Municipal Center ComplexWaterbury · listed 1978
- Waterbury Union StationWaterbury · listed 1978
- Webster SchoolWaterbury · listed 1982
- Welch Training SchoolNew Haven · listed 1983
- West Haven Green Historic DistrictWest Haven · listed 2000
- West Haven VA Hospital Historic DistrictWest Haven · listed 2022
- Westville Village Historic DistrictNew Haven · listed 2003
- Westville Village Historic District (Boundary Increase)New Haven · listed 2006
- Wheeler-Beecher HouseBethany · listed 1977
- Wheeler, Adin, House and Theodore F. Wheeler Wheelwright ShopSouthbury · listed 1993
- Whitney Avenue Historic DistrictNew Haven · listed 1989
- Whitney, Eli, Gun FactoryHamden · listed 1974
- Whitneyville Congregational ChurchHamden · listed 1995
- Wilby High SchoolWaterbury · listed 1982
- Wiley-Tremaine HouseMadison · listed 2026
- William Andrew HouseOrange · listed 2002
- William Hurd HouseSouthbury · listed 1993
- William Pinto HouseNew Haven · listed 1985
- Winchester Repeating Arms Company Historic DistrictNew Haven · listed 1988
- Winchester Repeating Arms Company Historic District (Boundary Increase)New Haven · listed 2015
- Wolcott Green Historic DistrictWolcott · listed 2000
- Woodbridge Green Historic DistrictWoodbridge · listed 2003
- Wooster Square Historic DistrictNew Haven · listed 1971
- Yale BowlNew Haven · listed 1987
- Zaccheus Baldwin HouseBranford · listed 1988
New London County (193)
- Abel H. Fish HouseSalem · listed 1982
- Acors Barns HouseNew London · listed 1976
- American Thermos Bottle Company Laurel Hill PlantNorwich · listed 1989
- Andrew Clark HouseLisbon · listed 1979
- Anshei Israel SynagogueLisbon · listed 1995
- Antone DeSant HousesNew London · listed 2025
- Applewood FarmLedyard · listed 1987
- Ashbel Woodward HouseFranklin · listed 1992
- AshlawnSprague · listed 1979
- Avery HomesteadLedyard · listed 1992
- Avery HouseGriswold · listed 1986
- Avery Point LighthouseGroton · listed 2002
- Bacon AcademyColchester · listed 1982
- Baltic Historic DistrictSprague · listed 1987
- Bean Hill Historic DistrictNorwich · listed 1982
- Blackledge River Railroad BridgeColchester · listed 1986
- Bozrah Congregational Church and ParsonageBozrah · listed 1991
- Bradford-Huntington HouseNorwichtown · listed 1970
- Branford HouseGroton · listed 1984
- Brewster HomesteadGriswold · listed 2000
- Bridge No. 1860Montville · listed 1993
- Broad Street SchoolNorwich · listed 1984
- Bulkeley SchoolNew London · listed 1981
- Burnett's Corner Historic DistrictGroton · listed 1997
- Burnham TavernLisbon · listed 2022
- Capt. Enoch Lord HouseOld Lyme · listed 2007
- Capt. Mark Stoddard FarmsteadGales Ferry · listed 1992
- Capt. Nathaniel B. Palmer HouseStonington · listed 1996
- Capt. Richard Charlton HouseNorwichtown · listed 1970
- Capt. Thomas Fanning FarmsteadLedyard · listed 1992
- Carpenter HouseNorwichtown · listed 1970
- Carpenter, Joseph, Silversmith ShopNorwichtown · listed 1970
- Carroll BuildingNorwich · listed 1982
- Cedar Grove CemeteryNew London · listed 2024
- Central Vermont Railroad PierNew London · listed 2005
- CHARLES W. MORGANMystic · listed 1966
- Chelsea Parade Historic DistrictNorwich · listed 1989
- Civic Institutions Historic DistrictNew London · listed 1990
- Clark HomesteadLebanon · listed 1978
- Coit Street Historic DistrictNew London · listed 1988
- Col. Joshua Huntington HouseNorwich · listed 1972
- Colchester Village Historic DistrictColchester · listed 1994
- Converse House and BarnNorwich · listed 1970
- David Chapman FarmsteadLedyard · listed 1992
- Deshon-Allyn HouseNew London · listed 1970
- Downtown New London Historic DistrictNew London · listed 1979
- Downtown New London Historic District (Boundary Increase)New London · listed 1988
- Downtown Norwich Historic DistrictNorwich · listed 1985
- Dr. Daniel Lathrop SchoolNorwichtown · listed 1970
- Dr. Joshua Lathrop HouseNorwichtown · listed 1970
- Dr. Philip Turner HouseNorwichtown · listed 1970
- East District SchoolNorwich · listed 1970
- Eastern Point Historic DistrictGroton · listed 1979
- Edward Bloom Silk Company FactoryNew London · listed 2021
- Edward Cogswell HouseGriswold · listed 1993
- Edward Waldo HouseScotland · listed 1978
- Edward Yeomans HouseGroton · listed 1978
- EMMA C. BERRY (Fishing Sloop)Mystic · listed 1994
- Eolia-Harkness EstateWaterford · listed 1986
- Florence Griswold House and MuseumOld Lyme · listed 1993
- Fort GriswoldGroton · listed 2017
- Fort TrumbullNew London · listed 1972
- Gales Ferry Historic District No. 1Gales Ferry · listed 1992
- Gales Ferry Historic District No. 2Ledyard · listed 2002
- Gen. Jedidiah Huntington HouseNorwichtown · listed 1970
- Gov. Samuel Huntington HouseNorwichtown · listed 1970
- Graniteville Historic DistrictWaterford · listed 2003
- Greeneville Historic DistrictNorwich · listed 2005
- Groton Bank Historic DistrictGroton · listed 1983
- Gurdon Bill StoreLedyard · listed 1982
- Hadlyme Ferry Historic DistrictHadlyme · listed 1994
- Hallville Mill Historic DistrictPreston · listed 1996
- Hamburg Bridge Historic DistrictLyme · listed 1983
- Hartford ColonyWaterford · listed 2005
- Hayward HouseColchester · listed 1972
- Hempstead Historic DistrictNew London · listed 1986
- Henry Champion HouseColchester · listed 1972
- Hodges Square Historic DistrictNew London · listed 2017
- House at 130 Mohegan AvenueNew London · listed 2009
- Huntington Street Baptist ChurchNew London · listed 1982
- Jabez Smith HouseGroton · listed 1981
- Jail Hill Historic DistrictNorwich · listed 1999
- James Merrill HouseStonington · listed 2013
- John Palmer HouseLisbon · listed 2005
- John Randall HouseNorth Stonington · listed 1978
- John Trumbull BirthplaceLebanon · listed 1966
- John Wilson HouseJewett · listed 1985
- Jonathan Newton Harris HouseNew London · listed 1982
- Jordan Village Historic DistrictWaterford · listed 1990
- Joshua Hempstead HouseNew London · listed 1970
- Kinne CemeteryGriswold · listed 2001
- L. A. DUNTONMystic · listed 1993
- Lamb HomesteadLedyard · listed 1991
- Lathrop-Mathewson-Ross HouseLisbon · listed 1982
- Laurel Hill Historic DistrictNorwich · listed 1987
- Lebanon Green Historic DistrictLebanon · listed 1979
- Leffingwell InnNorwichtown · listed 1970
- Lighthouse InnNew London · listed 1996
- Little Plain Historic DistrictNorwich · listed 1970
- Little Plain Historic District (Boundary Increase)Norwich · listed 1987
- Long Society MeetinghouseNorwich · listed 1976
- Luther Palmer HouseNorth Stonington · listed 1979
- Lyman ViaductColchester · listed 1986
- Main SawmillLedyard · listed 1972
- Mechanic Street Historic DistrictStonington · listed 1988
- Mill Brook BridgeLisbon · listed 1997
- Montauk Avenue Historic DistrictNew London · listed 1990
- Monte Cristo CottageNew London · listed 1971
- Mystic BankOld Mystic · listed 2014
- Mystic Bridge Historic DistrictMystic · listed 1979
- Mystic River Historic DistrictWest Mystic · listed 1979
- Nathan A. Woodworth HouseNew London · listed 1982
- Nathan Lester HouseLedyard · listed 1972
- Nathaniel Backus HouseNorwich · listed 1970
- Nathaniel Hempsted HouseNew London · listed 1970
- New England Hebrew Farmers of the Emanuel Society Synagogue and Creamery SiteChesterfield · listed 2012
- New London County CourthouseNew London · listed 1970
- New London CustomhouseNew London · listed 1970
- New London Harbor LighthouseNew London · listed 1990
- New London Ledge LighthouseNew London · listed 1990
- New London Public LibraryNew London · listed 1970
- New London Railroad StationNew London · listed 1971
- Noank Historic DistrictNoank · listed 1979
- North Stonington Village Historic DistrictNorth Stonington · listed 1983
- Norwich Hospital DistrictNorwich-Preston · listed 1988
- Norwich Town HallNorwich · listed 1983
- Norwichtown Historic DistrictNorwich · listed 1973
- Occum Hydroelectric Plant and DamNorwich · listed 1996
- Ohev Sholem SynagogueNew London · listed 1995
- Oil Mill Historic DistrictWaterford · listed 2023
- Old Lyme Historic DistrictOld Lyme · listed 1971
- Oswegatchie Historic DistrictWaterford · listed 2005
- Peck TavernOld Lyme · listed 1982
- Pequot Colony Historic DistrictNew London · listed 1988
- Pequotsepos ManorMystic · listed 1979
- Perkins-Bill HouseGales Ferry · listed 2000
- Perkins-Rockwell HouseNorwich · listed 1985
- Plant, Morton Freeman, Hunting LodgeEast Lyme · listed 1988
- Poquetanuck Village Historic DistrictPreston · listed 1996
- Post Hill Historic DistrictNew London · listed 1993
- Preston City Historic DistrictPreston · listed 1987
- Prospect Street Historic DistrictNew London · listed 1986
- Quaker Hill Historic DistrictWaterford · listed 2002
- Raymond-Bradford HomesteadMontville · listed 1982
- River Road Stone Arch Railroad BridgeColchester · listed 1986
- Robert Stanton HouseStonington · listed 1979
- Rocky Neck PavilionEast Lyme · listed 1986
- SABINO (steamer)Mystic · listed 1992
- Salem Historic DistrictSalem · listed 1980
- Samuel Miner HouseNorth Stonington · listed 1976
- Samuel Smith HouseEast Lyme · listed 1979
- Shaw MansionNew London · listed 1970
- Shepherd of the Sea ChapelGroton · listed 2025
- Shubel Smith HouseLedyard · listed 1996
- Simon Tiffany HouseSalem · listed 1983
- Slater Library and Fanning AnnexGriswold · listed 2002
- SpringbankOld Lyme · listed 2001
- St. James' Episcopal ChurchNew London · listed 2004
- Stonington Borough Historic DistrictStonington · listed 1979
- Stonington CemeteryStonington · listed 2018
- Stonington Harbor LighthouseStonington · listed 1976
- Stonington High SchoolStonington · listed 1978
- TaftvilleNorwich · listed 1978
- Telephone Exchange BuildingNorwich · listed 1983
- Thames ShipyardNew London · listed 1975
- The SeasideWaterford · listed 1995
- Thomas Avery HouseEast Lyme · listed 1979
- Thomas Lee HouseEast Lyme · listed 1970
- Timothy Lester FarmsteadGriswold · listed 1998
- U.S.S. NAUTILUS (submarine)Groton · listed 1979
- Uncasville Mill Historic DistrictMontville · listed 2021
- Uncasville SchoolMontville · listed 2001
- United States Housing Corporation Historic DistrictNew London · listed 1990
- US Post Office-New London MainNew London · listed 1986
- US Post Office-Norwich MainNorwich · listed 1986
- Walnut GroveWaterford · listed 2005
- War OfficeLebanon · listed 1970
- Whale Oil RowNew London · listed 1970
- Wheeler BlockColchester · listed 1993
- Whitehall MansionStonington · listed 1979
- William A. Buckingham HouseNorwich · listed 1982
- William Clark Company Thread MillStonington · listed 2008
- William Gorton FarmEast Lyme · listed 1984
- William Noyes FarmsteadLedyard · listed 1992
- William Park HouseSprague · listed 2007
- William Williams HouseLebanon · listed 1971
- Williams Memorial InstituteNew London · listed 1978
- Williams Memorial Park Historic DistrictNew London · listed 1987
- Winslow Ames HouseNew London · listed 1995
- Winthrop MillNew London · listed 1982
- Woodbridge FarmSalem · listed 1997
- Yantic Falls Historic DistrictNorwich · listed 1972
- Yantic Woolen Company MillNorwich · listed 1996
Tolland County (47)
- Andover Center Historic DistrictAndover · listed 2003
- Augustus Post HouseHebron · listed 1982
- Bolton Green Historic DistrictBolton · listed 2001
- Brigham's TavernCoventry · listed 1982
- Capron-Phillips HouseCoventry · listed 1982
- Captain Nathan Hale MonumentCoventry · listed 2002
- Columbia Green Historic DistrictColumbia · listed 1990
- Coventry Glass Factory Historic DistrictCoventry · listed 1987
- Eleazer Williams HouseMansfield Center · listed 1971
- Elias Sprague HouseCoventry · listed 1987
- Ellington Center Historic DistrictEllington · listed 1990
- Farwell BarnMansfield · listed 2001
- Florence MillRockville · listed 1978
- Gurleyville Historic DistrictMansfield Center · listed 1975
- Hebron Center Historic DistrictHebron · listed 1993
- Jared Cone HouseBolton · listed 1990
- John Cady HouseTolland · listed 1982
- Knesseth Israel SynagogueEllington · listed 1995
- Loomis-Pomeroy HouseCoventry · listed 1994
- Mansfield Center CemeteryMansfield · listed 1992
- Mansfield Center Historic DistrictMansfield · listed 1972
- Mansfield Hollow DamMansfield Center · listed 2003
- Mansfield Hollow Historic DistrictMansfield · listed 1979
- Mansfield Training School and HospitalMansfield · listed 1987
- March Route of Rochambeau's Army: Bailey RoadBolton · listed 2003
- March Route Rochambeau's Army-Hutchinson RoadAndover · listed 2002
- Minterburn MillVernon · listed 1984
- Nathan Hale HomesteadCoventry · listed 1970
- Old Rockville High School and East SchoolRockville · listed 1981
- Oliver White TavernBolton · listed 2002
- Parker-Hutchinson FarmCoventry · listed 1982
- Rockville Historic DistrictRockville · listed 1984
- Saxony MillRockville · listed 1983
- Somers Historic DistrictSomers · listed 1982
- Somersville Historic DistrictSomersville · listed 1995
- South Coventry Historic DistrictCoventry · listed 1991
- South Willington Historic DistrictWillington · listed 2017
- Spring Hill Historic DistrictSpring Hill · listed 1979
- Stafford Springs Historic DistrictStafford · listed 2025
- Strong HouseCoventry · listed 1988
- Talcottville Historic DistrictVernon · listed 1989
- Tolland County CourthouseTolland · listed 1977
- Tolland Green Historic DistrictTolland · listed 1997
- Union Green Historic DistrictUnion · listed 1990
- University of Connecticut Historic District-Connecticut Agricultural SchoolMansfield · listed 1989
- White's TavernAndover · listed 1991
- Willington Common Historic DistrictWillington · listed 1990
Windham County (80)
- Abington Congregational ChurchAbington · listed 1977
- Aldrich Free Public LibraryPlainfield · listed 1994
- American Thread CompanyWillimantic · listed 2014
- Ashford AcademyAshford · listed 1988
- Benjamin Bosworth HouseEastford · listed 1978
- Brayton Grist MillPomfret · listed 1986
- Broad Street-Davis Park Historic DistrictKillingly · listed 1998
- Brooklyn Green Historic DistrictBrooklyn · listed 1982
- Bush Hill Historic DistrictBrooklyn · listed 1987
- Butts BridgeCanterbury · listed 2010
- Cady-Copp HousePutnam · listed 2001
- Canterbury Center Historic DistrictCanterbury · listed 1998
- Capt. John Clark HouseCanterbury · listed 1970
- Capt. Seth Chandler HouseEast Woodstock · listed 1993
- Cargill Falls Mill (Wilkinson Mill)Putnam · listed 2014
- Central Village Historic DistrictPlainfield · listed 1991
- Chaplin Historic DistrictChaplin · listed 1978
- Church FarmAshford · listed 1988
- Danielson Main Street Historic DistrictKillingly · listed 1992
- Dayville Historic DistrictKillingly · listed 1988
- Dorrance InnSterling · listed 2002
- Dr. Chester Hunt OfficeWindham Center · listed 1970
- Elliottville Lower MillEast Killingly · listed 1982
- First Congregational Church of PlainfieldPlainfield · listed 1986
- George Pickering Nichols HouseThompson · listed 1991
- Glen Falls BridgePlainfield · listed 1999
- Gwyn CaregAbington · listed 1994
- Hampton Hill Historic DistrictHampton · listed 1982
- Henry C. Bowen HouseWoodstock · listed 1977
- Isaac and Sarah Upham HouseThompson · listed 2025
- Israel Putnam SchoolPutnam · listed 1984
- Jonathan Wheeler HouseCanterbury · listed 1982
- Killingly High School, OldKillingly · listed 1992
- Knowlton Memorial HallAshford · listed 1994
- Lawton Mills Historic DistrictPlainfield · listed 1996
- Main Street Historic DistrictWillimantic · listed 1982
- Main Street Historic District (Boundary Increase)Windham · listed 1992
- March Route of Rochambeau's Army: Manship Road-Barstow RoadCanterbury · listed 2003
- March Route of Rochambeau's Army: Old Canterbury RoadPlainfield · listed 2003
- March Route of Rochambeau's Army: Palmer RoadScotland · listed 2003
- March Route of Rochambeau's Army: Plainfield PikePlainfield · listed 2003
- March Route of Rochambeau's Army: Scotland RoadWindham · listed 2003
- Mathew Bowen HomesteadWoodstock · listed 1987
- Mixer TavernAshford · listed 1994
- Natchaug Forest Lumber ShedEastford · listed 1986
- North Grosvenordale Mill Historic DisrictThompson · listed 1993
- Old Westfield CemeteryKillingly · listed 2010
- Packerville BridgePlainfield · listed 1992
- Plainfield Street Historic DistrictPlainfield · listed 1991
- Plainfield Woolen Company MillPlainfield · listed 1985
- Pomfret Street Historic DistrictPomfret · listed 1998
- Pomfret Town HousePomfret · listed 1989
- Prospect Hill Historic DistrictWillimatic · listed 2003
- Prudence Crandall HouseCanterbury · listed 1970
- Putnam FarmBrooklyn · listed 1982
- Putnam High SchoolPutnam · listed 1993
- Putnam Railroad StationPutnam · listed 2007
- Putnam, Israel, Wolf DenPomfret · listed 1985
- Quinebaug Mill-Quebec Square Historic DistrictBrookland-Killingly · listed 1985
- Quinebaug River Prehistoric Archeological DistrictCanterbury · listed 2009
- Samuel Huntington BirthplaceScotland · listed 1971
- Sterling Hill Historic DistrictSterling · listed 1986
- Sumner-Carpenter HouseEastford · listed 1991
- Taylor's CornerWoodstock · listed 1989
- Temple Beth IsraelDanielson · listed 2013
- Thompson Hill Historic DistrictThompson · listed 1987
- Trinity ChurchBrooklyn · listed 1970
- Union Society of Phoenixville HouseEastford · listed 2007
- Unitarian MeetinghouseBrooklyn · listed 1972
- Wauregan Historic DistrictPlainfield · listed 1979
- William Jillson Stone HouseWillimantic · listed 1971
- Willimantic ArmoryWindham · listed 1985
- Willimantic Elks ClubWindham · listed 2005
- Willimantic FootbridgeWillimantic · listed 1979
- Willimantic Freight House and OfficeWillimantic · listed 1982
- Windham Center Historic DistrictWindham · listed 1979
- Witter HouseChaplin · listed 1970
- Woodstock Academy Classroom BuildingWoodstock · listed 1984
- Woodstock Hill Historic DistrictWoodstock · listed 1999
- Wylie SchoolVoluntown · listed 1991