Pennsylvania Counties by Population

Below are the 67 Pennsylvania counties sorted by population from largest to smallest. The population data are from the 2022 American Community Survey.

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Rank County Population
1 Philadelphia County 1,593,208
2 Allegheny County 1,245,310
3 Montgomery County 856,399
4 Bucks County 645,163
5 Delaware County 575,312
6 Lancaster County 553,202
7 Chester County 536,474
8 York County 457,051
9 Berks County 428,483
10 Lehigh County 374,110
11 Westmoreland County 354,414
12 Luzerne County 325,396
13 Northampton County 314,299
14 Dauphin County 286,108
15 Erie County 270,495
16 Cumberland County 261,269
17 Lackawanna County 215,672
18 Washington County 209,631
19 Butler County 194,562
20 Monroe County 168,128
21 Beaver County 167,629
22 Centre County 158,665
23 Franklin County 156,084
24 Lebanon County 143,258
25 Schuylkill County 143,201
26 Cambria County 133,263
27 Fayette County 128,417
28 Blair County 122,640
29 Lycoming County 114,022
30 Mercer County 110,600
31 Adams County 104,604
32 Northumberland County 91,340
33 Lawrence County 85,907
34 Crawford County 83,876
35 Indiana County 83,394
36 Clearfield County 79,707
37 Somerset County 73,802
38 Armstrong County 65,538
39 Carbon County 65,018
40 Columbia County 64,924
41 Bradford County 60,159
42 Pike County 58,996
43 Wayne County 51,227
44 Venango County 50,475
45 Bedford County 47,613
46 Mifflin County 46,146
47 Perry County 45,941
48 Jefferson County 44,326
49 Huntingdon County 44,123
50 Union County 42,908
51 Tioga County 41,186
52 McKean County 40,459
53 Snyder County 39,797
54 Susquehanna County 38,540
55 Warren County 38,492
56 Clinton County 37,860
57 Clarion County 37,489
58 Greene County 35,781
59 Elk County 30,886
60 Wyoming County 26,219
61 Juniata County 23,535
62 Montour County 18,165
63 Potter County 16,390
64 Fulton County 14,545
65 Forest County 6,959
66 Sullivan County 5,880
67 Cameron County 4,536

United States Census Bureau. B01001 SEX BY AGE, 2022 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 7 December 2023. http://www.census.gov/.

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