First-level division
🇺🇸 Pennsylvania
Subdivisions
Philadelphia
Population 1,526,006
Allegheny County
Population 1,223,348
Montgomery County
Population 799,874
Bucks
Population 625,249
Delaware
Population 558,979
Lancaster
Population 519,445
Chester
Population 498,886
York
Population 434,972
Berks
Population 411,442
Westmoreland
Population 365,169
Lehigh
Population 349,497
Luzerne
Population 320,918
Northampton
Population 297,735
Erie
Population 280,566
Dauphin County
Population 268,100
Cumberland
Population 235,406
Lackawanna County
Population 214,437
Washington
Population 207,820
Butler County
Population 183,862
Beaver County
Population 170,539
Monroe
Population 169,842
Centre County
Population 153,990
Franklin County
Population 149,618
Schuylkill County
Population 148,289
Cambria County
Population 143,679
Fayette
Population 136,606
Lebanon County
Population 133,568
Blair County
Population 127,089
Mercer County
Population 116,638
Lycoming County
Population 116,111
Adams County
Population 101,407
Northumberland
Population 94,528
Lawrence County
Population 91,108
Indiana County
Population 88,880
Crawford County
Population 88,765
Clearfield
Population 81,642
Somerset
Population 77,742
Armstrong County
Population 68,941
Columbia County
Population 67,295
Carbon County
Population 65,249
Bradford County
Population 62,622
Pike County
Population 57,369
Venango County
Population 54,984
Wayne County
Population 52,822
Bedford
Population 49,762
Mifflin County
Population 46,682
Perry County
Population 45,969
Huntingdon County
Population 45,913
Jefferson County
Population 45,200
Union County
Population 44,947
McKean
Population 43,450
Susquehanna County
Population 43,356
Tioga
Population 41,981
Warren County
Population 41,815
Clarion
Population 39,988
Snyder County
Population 39,702
Clinton County
Population 39,238
Greene County
Population 38,686
Elk County
Population 31,946
Wyoming
Population 28,276
Juniata
Population 24,636
Montour County
Population 18,267
Potter County
Population 17,457
Fulton County
Population 14,845
Forest County
Population 7,716
Sullivan County
Population 6,428
Cameron County
Population 5,085