Pennsylvania / Counties by Population

Pennsylvania Counties by Population

Below are the 67 Pennsylvania counties sorted by population from largest to smallest. The population data are from the 2021 American Community Survey. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!

Rank County Population
1 Philadelphia County 1,596,865
2 Allegheny County 1,246,116
3 Montgomery County 850,890
4 Bucks County 643,872
5 Delaware County 573,883
6 Lancaster County 550,480
7 Chester County 531,704
8 York County 454,605
9 Berks County 426,967
10 Lehigh County 372,492
11 Westmoreland County 355,107
12 Luzerne County 324,825
13 Northampton County 311,359
14 Dauphin County 284,199
15 Erie County 271,903
16 Cumberland County 257,333
17 Lackawanna County 215,529
18 Washington County 209,090
19 Butler County 192,561
20 Beaver County 168,260
21 Monroe County 168,128
22 Centre County 158,879
23 Franklin County 155,592
24 Schuylkill County 143,308
25 Lebanon County 142,486
26 Cambria County 134,048
27 Fayette County 129,443
28 Blair County 123,132
29 Lycoming County 114,274
30 Mercer County 111,216
31 Adams County 103,782
32 Northumberland County 91,853
33 Lawrence County 86,311
34 Crawford County 84,495
35 Indiana County 83,620
36 Clearfield County 80,667
37 Somerset County 74,331
38 Armstrong County 65,967
39 Columbia County 65,013
40 Carbon County 64,792
41 Bradford County 60,233
42 Pike County 58,345
43 Wayne County 51,244
44 Venango County 50,810
45 Bedford County 47,729
46 Mifflin County 46,156
47 Perry County 45,879
48 Jefferson County 44,491
49 Huntingdon County 44,458
50 Union County 43,094
51 Tioga County 41,089
52 McKean County 40,652
53 Snyder County 39,877
54 Susquehanna County 38,892
55 Warren County 38,791
56 Clinton County 37,824
57 Clarion County 37,571
58 Greene County 36,248
59 Elk County 31,037
60 Wyoming County 26,389
61 Juniata County 23,607
62 Montour County 18,198
63 Potter County 16,478
64 Fulton County 14,529
65 Forest County 7,121
66 Sullivan County 5,935
67 Cameron County 4,596

United States Census Bureau. B01001 SEX BY AGE, 2021 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 8 December 2022. http://www.census.gov/.

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