Counties in Pennsylvania
Pennsylvania has 67 counties. They are listed by population, largest first, starting with Philadelphia County, Allegheny County, and Montgomery County.
- Philadelphia County, Pennsylvania
- Allegheny County, Pennsylvania
- Montgomery County, Pennsylvania
- Bucks County, Pennsylvania
- Delaware County, Pennsylvania
- Lancaster County, Pennsylvania
- Chester County, Pennsylvania
- York County, Pennsylvania
- Berks County, Pennsylvania
- Lehigh County, Pennsylvania
- Westmoreland County, Pennsylvania
- Luzerne County, Pennsylvania
- Northampton County, Pennsylvania
- Dauphin County, Pennsylvania
- Cumberland County, Pennsylvania
- Erie County, Pennsylvania
- Lackawanna County, Pennsylvania
- Washington County, Pennsylvania
- Butler County, Pennsylvania
- Monroe County, Pennsylvania
- Beaver County, Pennsylvania
- Franklin County, Pennsylvania
- Centre County, Pennsylvania
- Lebanon County, Pennsylvania
- Schuylkill County, Pennsylvania
- Cambria County, Pennsylvania
- Fayette County, Pennsylvania
- Blair County, Pennsylvania
- Lycoming County, Pennsylvania
- Mercer County, Pennsylvania
- Adams County, Pennsylvania
- Northumberland County, Pennsylvania
- Lawrence County, Pennsylvania
- Indiana County, Pennsylvania
- Crawford County, Pennsylvania
- Clearfield County, Pennsylvania
- Somerset County, Pennsylvania
- Columbia County, Pennsylvania
- Carbon County, Pennsylvania
- Armstrong County, Pennsylvania
- Pike County, Pennsylvania
- Bradford County, Pennsylvania
- Wayne County, Pennsylvania
- Venango County, Pennsylvania
- Bedford County, Pennsylvania
- Perry County, Pennsylvania
- Mifflin County, Pennsylvania
- Jefferson County, Pennsylvania
- Huntingdon County, Pennsylvania
- Union County, Pennsylvania
- Tioga County, Pennsylvania
- Snyder County, Pennsylvania
- McKean County, Pennsylvania
- Susquehanna County, Pennsylvania
- Clinton County, Pennsylvania
- Warren County, Pennsylvania
- Clarion County, Pennsylvania
- Greene County, Pennsylvania
- Elk County, Pennsylvania
- Wyoming County, Pennsylvania
- Juniata County, Pennsylvania
- Montour County, Pennsylvania
- Potter County, Pennsylvania
- Fulton County, Pennsylvania
- Forest County, Pennsylvania
- Sullivan County, Pennsylvania
- Cameron County, Pennsylvania