The following counties in Pennsylvania have historic locations on the National Register of Historic places. Please select a county in Pennsylvania to see the different historic places in the county.

Adams County Historic Locations	Allegheny County Historic Locations
Armstrong County Historic Locations	Beaver County Historic Locations
Bedford County Historic Locations	Berks County Historic Locations
Blair County Historic Locations	Bradford County Historic Locations
Bucks County Historic Locations	Butler County Historic Locations
Cambria County Historic Locations	Carbon County Historic Locations
Centre County Historic Locations	Chester County Historic Locations
Clarion County Historic Locations	Clearfield County Historic Locations
Clinton County Historic Locations	Columbia County Historic Locations
Crawford County Historic Locations	Cumberland County Historic Locations
Dauphin County Historic Locations	Delaware County Historic Locations
Elk County Historic Locations	Erie County Historic Locations
Fayette County Historic Locations	Forest County Historic Locations
Franklin County Historic Locations	Fulton County Historic Locations
Greene County Historic Locations	Huntingdon County Historic Locations
Indiana County Historic Locations	Jefferson County Historic Locations
Juniata County Historic Locations	Lackawanna County Historic Locations
Lancaster County Historic Locations	Lawrence County Historic Locations
Lebanon County Historic Locations	Lehigh County Historic Locations
Luzerne County Historic Locations	Lycoming County Historic Locations
McKean County Historic Locations	Mercer County Historic Locations
Mifflin County Historic Locations	Monroe County Historic Locations
Montgomery County Historic Locations	Montour County Historic Locations
Northampton County Historic Locations	Northumberland County Historic Locations
Perry County Historic Locations	Philadelphia County Historic Locations
Pike County Historic Locations	Potter County Historic Locations
Schuylkill County Historic Locations	Snyder County Historic Locations
Somerset County Historic Locations	Sullivan County Historic Locations
Susquehanna County Historic Locations	Tioga County Historic Locations
Union County Historic Locations	Venango County Historic Locations
Warren County Historic Locations	Washington County Historic Locations
Wayne County Historic Locations	Westmoreland County Historic Locations
Wyoming County Historic Locations	York County Historic Locations