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All states: the U.S. marker map

Pennsylvania's historical markers, on the maps of their own eras

Every mapped marker in the Pennsylvania Historical and Museum Commission's program now has a permanent page at TreeAlive, placing its full inscription on georeferenced maps from the period it commemorates.

2,545 marker pages, on more than 84,000 historical map sheets. Pennsylvania Historical and Museum Commission, credited on every page.

Every dot is a live page. Click one to preview it or add it to a road trip; many dots hold several markers each; click a busy spot to zoom in. Prefer a list? Browse all 2,545 markers by county.

Featured markers

Gettysburg Address
1863
See it on a period map
George Washington
1753
See it on a period map
York Liberty Bell
See it on a period map
Washington Mill
1774–1795
See it on a period map
Gettysburg 1863 · a 5-stop trail, page by page
Five stops through the battle’s markers on maps of their own era, ending at the Gettysburg Address.

What a Pennsylvania family sees

TreeAlive maps family trees. When a visitor's ancestors lived in Pennsylvania, the markers standing near those places surface automatically alongside their family's journey:

Lancaster County Courthouse · under a mile from where their sixth-great-grandfather lived in 1756 · what this marker records spans 1739 to 1853, overlapping their sixth-great-grandfather's years here

When a marker stands near a place in your own tree, you have a personal reason to go see it. Open the live demo tree, choose the Crossings tab, and turn on Historical Markers to see it working.

QR-ready, from day one

Every marker page has print-ready QR artwork. A scan at the sign opens the marker's page on the period map, no app to install. TreeAlive does no printing or installation.

Marker page links are permanent: identifiers are never reassigned, so a code printed today resolves for good.

QR code opening the Gettysburg Address marker page Scan: Gettysburg Address marker

Find a marker

Browsing all 2,545 markers by county.

Adams County 47
Allegheny County 155
Armstrong County 14
Beaver County 19
Bedford County 35
Berks County 67
Blair County 27
Bradford County 43
Bucks County 75
Butler County 15
Cambria County 28
Cameron County 9
Carbon County 11
Centre County 30
Chester County 74
Clarion County 8
Clearfield County 12
Clinton County 13
Columbia County 9
Crawford County 39
Cumberland County 76
Dauphin County 88
Delaware County 68
Elk County 4
Erie County 58
Fayette County 44
Forest County 11
Franklin County 70
Fulton County 14
Greene County 11
Huntingdon County 23
Indiana County 15
Jefferson County 14
Juniata County 5
Lackawanna County 33
Lancaster County 75
Lawrence County 18
Lebanon County 32
Lehigh County 33
Luzerne County 69
Lycoming County 31
McKean County 18
Mercer County 20
Mifflin County 12
Monroe County 25
Montgomery County 65
Montour County 6
Northampton County 72
Northumberland County 32
Perry County 16
Philadelphia County 348
Pike County 19
Potter County 11
Schuylkill County 28
Snyder County 15
Somerset County 32
Sullivan County 6
Susquehanna County 12
Tioga County 16
Union County 22
Venango County 32
Warren County 14
Washington County 58
Wayne County 16
Westmoreland County 45
Wyoming County 13
York County 69
Other locations 1