Population
|
County
|
1,576,251
|
Philadelphia
|
1,238,090
|
Allegheny
|
860,578
|
Montgomery
|
646,098
|
Bucks
|
573,849
|
Delaware
|
553,652
|
Lancaster
|
538,649
|
Chester
|
458,696
|
York
|
429,342
|
Berks
|
375,539
|
Lehigh
|
353,057
|
Westmoreland
|
326,053
|
Luzerne
|
313,628
|
Northampton
|
287,400
|
Dauphin
|
269,011
|
Erie
|
262,919
|
Cumberland
|
215,663
|
Lackawanna
|
209,470
|
Washington
|
194,273
|
Butler
|
169,273
|
Monroe
|
166,624
|
Beaver
|
157,527
|
Centre
|
156,289
|
Franklin
|
|
Population
|
County
|
143,493
|
Lebanon
|
143,264
|
Schuylkill
|
132,167
|
Cambria
|
126,931
|
Fayette
|
121,767
|
Blair
|
113,605
|
Lycoming
|
109,972
|
Mercer
|
104,127
|
Adams
|
91,266
|
Northumberland
|
85,497
|
Lawrence
|
83,351
|
Crawford
|
82,886
|
Indiana
|
80,082
|
Clearfield
|
73,627
|
Somerset
|
65,412
|
Carbon
|
65,093
|
Armstrong
|
64,872
|
Columbia
|
59,952
|
Pike
|
59,892
|
Bradford
|
51,431
|
Wayne
|
49,938
|
Venango
|
47,461
|
Bedford
|
|
Population
|
County
|
46,136
|
Mifflin
|
45,986
|
Perry
|
44,114
|
Jefferson
|
43,889
|
Huntingdon
|
42,568
|
Union
|
40,929
|
Tioga
|
39,941
|
McKean
|
39,621
|
Snyder
|
38,389
|
Susquehanna
|
38,134
|
Warren
|
37,465
|
Clinton
|
37,156
|
Clarion
|
35,369
|
Greene
|
30,783
|
Elk
|
26,034
|
Wyoming
|
23,297
|
Juniata
|
18,087
|
Montour
|
16,259
|
Potter
|
14,523
|
Fulton
|
7,032
|
Forest
|
5,868
|
Sullivan
|
4,459
|
Cameron
|
|