Pennsylvania library
Pennsylvania Counties
67 counties, each with its judicial district and prosecuting office.
- Philadelphia County, Pennsylvaniapop. 1,603,797
- Allegheny County, Pennsylvaniapop. 1,250,578
- Montgomery County, Pennsylvaniapop. 856,553
- Bucks County, Pennsylvaniapop. 646,538
- Delaware County, Pennsylvaniapop. 576,830
- Lancaster County, Pennsylvaniapop. 552,984
- Chester County, Pennsylvaniapop. 534,413
- York County, Pennsylvaniapop. 456,438
- Berks County, Pennsylvaniapop. 428,849
- Lehigh County, Pennsylvaniapop. 374,557
- Westmoreland County, Pennsylvaniapop. 354,663
- Luzerne County, Pennsylvaniapop. 325,594
- Northampton County, Pennsylvaniapop. 312,951
- Dauphin County, Pennsylvaniapop. 286,401
- Erie County, Pennsylvaniapop. 270,876
- Cumberland County, Pennsylvaniapop. 259,469
- Lackawanna County, Pennsylvaniapop. 215,896
- Washington County, Pennsylvaniapop. 209,349
- Butler County, Pennsylvaniapop. 193,763
- Monroe County, Pennsylvaniapop. 168,327
- Beaver County, Pennsylvaniapop. 168,215
- Centre County, Pennsylvaniapop. 158,172
- Franklin County, Pennsylvaniapop. 155,932
- Lebanon County, Pennsylvaniapop. 143,257
- Schuylkill County, Pennsylvaniapop. 143,049
- Cambria County, Pennsylvaniapop. 133,472
- Fayette County, Pennsylvaniapop. 128,804
- Blair County, Pennsylvaniapop. 122,822
- Lycoming County, Pennsylvaniapop. 114,188
- Mercer County, Pennsylvaniapop. 110,652
- Adams County, Pennsylvaniapop. 103,852
- Northumberland County, Pennsylvaniapop. 91,647
- Lawrence County, Pennsylvaniapop. 86,070
- Crawford County, Pennsylvaniapop. 83,938
- Indiana County, Pennsylvaniapop. 83,246
- Clearfield County, Pennsylvaniapop. 80,562
- Somerset County, Pennsylvaniapop. 74,129
- Armstrong County, Pennsylvaniapop. 65,558
- Carbon County, Pennsylvaniapop. 64,749
- Columbia County, Pennsylvaniapop. 64,727
- Bradford County, Pennsylvaniapop. 59,967
- Pike County, Pennsylvaniapop. 58,535
- Wayne County, Pennsylvaniapop. 51,155
- Venango County, Pennsylvaniapop. 50,454
- Bedford County, Pennsylvaniapop. 47,577
- Mifflin County, Pennsylvaniapop. 46,143
- Perry County, Pennsylvaniapop. 45,842
- Jefferson County, Pennsylvaniapop. 44,492
- Huntingdon County, Pennsylvaniapop. 44,092
- Union County, Pennsylvaniapop. 42,681
- Tioga County, Pennsylvaniapop. 41,045
- McKean County, Pennsylvaniapop. 40,432
- Snyder County, Pennsylvaniapop. 39,736
- Warren County, Pennsylvaniapop. 38,587
- Susquehanna County, Pennsylvaniapop. 38,434
- Clinton County, Pennsylvaniapop. 37,450
- Clarion County, Pennsylvaniapop. 37,241
- Greene County, Pennsylvaniapop. 35,954
- Elk County, Pennsylvaniapop. 30,990
- Wyoming County, Pennsylvaniapop. 26,069
- Juniata County, Pennsylvaniapop. 23,509
- Montour County, Pennsylvaniapop. 18,136
- Potter County, Pennsylvaniapop. 16,396
- Fulton County, Pennsylvaniapop. 14,556
- Forest County, Pennsylvaniapop. 6,973
- Sullivan County, Pennsylvaniapop. 5,840
- Cameron County, Pennsylvaniapop. 4,547