Ranking of Pennsylvania Counties By Population with Other Groups Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 2.69M people in Pennsylvania with Other Groups ancestry. Among all Pennsylvania counties, Philadelphia County had the highest population with Other Groups ancestry (777.82K), followed by Allegheny County (216.83K), and Montgomery County (197.29K).

The chart and table below shows the top 10 counties with high number of people with Other Groups ancestry.

You can see similar information for other states and for other ancestry groups in Pennsylvania.

Data Source: US Census Bureau.
Ranking of Pennsylvania Counties By Population with Other Groups Ancestry in 2021
Philadelphia County
Allegheny County
Montgomery County
Delaware County
Lehigh County
Chester County
Bucks County
Berks County
Lancaster County
York County
Ranking of Pennsylvania Counties By Population with Other Groups Ancestry in 2021
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Rank County Population
1 Philadelphia County 777824
2 Allegheny County 216834
3 Montgomery County 197286
4 Delaware County 146190
5 Lehigh County 123230
6 Chester County 108188
7 Bucks County 102408
8 Berks County 91472
9 Lancaster County 89755
10 York County 77218
11 Dauphin County 75098
12 Northampton County 66695
13 Luzerne County 58154
14 Monroe County 42808
15 Erie County 41399
16 Cumberland County 39788
17 Westmoreland County 30701
18 Lackawanna County 30128
19 Lebanon County 24323
20 Franklin County 23609
21 Centre County 21554
22 Beaver County 20793
23 Washington County 20027
24 Butler County 16739
25 Adams County 14566
26 Cambria County 13364
27 Mercer County 13316
28 Schuylkill County 13187
29 Fayette County 12407
30 Lycoming County 12109
31 Blair County 11720
32 Pike County 9694
33 Lawrence County 9538
34 Northumberland County 9342
35 Clearfield County 8889
36 Indiana County 7779
37 Crawford County 7355
38 Carbon County 6510
39 Somerset County 6499
40 Columbia County 6059
41 Union County 5403
42 Bradford County 5235
43 Huntingdon County 4954
44 Venango County 4886
45 Perry County 4717
46 Wayne County 4632
47 Mifflin County 4274
48 Armstrong County 3989
49 Greene County 3893
50 McKean County 3818
51 Bedford County 3715
52 Warren County 3669
53 Tioga County 3349
54 Snyder County 3320
55 Clinton County 3319
56 Clarion County 3270
57 Jefferson County 3237
58 Susquehanna County 2898
59 Juniata County 2831
60 Elk County 2283
61 Montour County 2048
62 Wyoming County 1836
63 Potter County 1489
64 Fulton County 1473
65 Forest County 1166
66 Sullivan County 439
67 Cameron County 397