Population
|
County
|
1,567,442
|
Philadelphia
|
1,230,459
|
Allegheny
|
819,264
|
Montgomery
|
627,367
|
Bucks
|
563,894
|
Delaware
|
536,624
|
Lancaster
|
515,939
|
Chester
|
442,867
|
York
|
415,271
|
Berks
|
360,685
|
Lehigh
|
357,956
|
Westmoreland
|
318,449
|
Luzerne
|
300,813
|
Northampton
|
278,045
|
Erie
|
272,983
|
Dauphin
|
246,338
|
Cumberland
|
211,917
|
Lackawanna
|
208,187
|
Washington
|
186,818
|
Butler
|
168,871
|
Beaver
|
166,397
|
Monroe
|
160,580
|
Centre
|
153,638
|
Franklin
|
|
Population
|
County
|
144,590
|
Schuylkill
|
137,067
|
Lebanon
|
136,411
|
Cambria
|
133,628
|
Fayette
|
125,593
|
Blair
|
116,048
|
Lycoming
|
114,234
|
Mercer
|
102,295
|
Adams
|
93,246
|
Northumberland
|
88,082
|
Lawrence
|
86,966
|
Indiana
|
86,484
|
Crawford
|
80,994
|
Clearfield
|
75,522
|
Somerset
|
67,052
|
Armstrong
|
66,672
|
Columbia
|
63,960
|
Carbon
|
61,281
|
Bradford
|
55,949
|
Pike
|
53,119
|
Venango
|
51,198
|
Wayne
|
48,586
|
Bedford
|
|
Population
|
County
|
46,500
|
Mifflin
|
45,685
|
Perry
|
44,954
|
Union
|
44,430
|
Huntington
|
44,430
|
Jefferson
|
42,412
|
McKean
|
41,877
|
Tioga
|
41,666
|
Susquehanna
|
40,444
|
Snyder
|
40,396
|
Warren
|
39,498
|
Clarion
|
39,441
|
Clinton
|
37,519
|
Greene
|
30,872
|
Elk
|
27,800
|
Wyoming
|
24,737
|
Juniata
|
18,557
|
Montour
|
17,093
|
Potter
|
14,629
|
Fulton
|
7,410
|
Forest
|
6,328
|
Sullivan
|
4,732
|
Cameron
|
|