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RANKING · 2020 CENSUS · 67 SHOWN OF 67

Largest American population, Pennsylvania counties · 2020

Pennsylvania counties ranked by the number of residents who are American ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide. The median across all 67 is 4,806.

American ancestry: full group profile →
SAME RANKING BYCitiesStatesMetros
Largest American population by state
RANKPLACESTATEPOPAMERICAN POPULATIONVS 2010
01Philadelphia County, PAPA1,574,28137,377+81%
02Allegheny County, PAPA1,225,03535,931−4%
03Montgomery County, PAPA877,64334,211+20%
04Lancaster County, PAPA563,15933,932−13%
05York County, PAPA473,19732,850−4%
06Bucks County, PAPA647,82825,626+6%
07Franklin County, PAPA160,65220,319+37%
08Northampton County, PAPA324,41120,025+53%
09Delaware County, PAPA580,93717,637+45%
10Chester County, PAPA557,11617,623−20%
11Berks County, PAPA440,07217,251−9%
12Dauphin County, PAPA293,35115,764+35%
13Cumberland County, PAPA277,27014,252−1%
14Westmoreland County, PAPA349,32413,943−1%
15Lehigh County, PAPA384,38311,637+1%
16Luzerne County, PAPA332,12610,289−2%
17Adams County, PAPA107,59410,260+3%
18Erie County, PAPA265,8328,562−24%
19Butler County, PAPA200,1698,443+9%
20Lackawanna County, PAPA216,5028,205+57%
21Centre County, PAPA157,3938,086−6%
22Lebanon County, PAPA146,3807,863−5%
23Tioga County, PAPA40,5027,709+114%
24Monroe County, PAPA167,1797,406+54%
25Lycoming County, PAPA112,5877,254−7%
26Fayette County, PAPA123,0216,341−6%
27Washington County, PAPA210,8026,307−8%
28Blair County, PAPA119,5415,947−21%
29Mercer County, PAPA107,8605,796−2%
30Beaver County, PAPA166,0325,476−17%
31Cambria County, PAPA128,9685,180−19%
32Crawford County, PAPA81,7925,138+9%
33Mifflin County, PAPA46,1274,822−1%
34Schuylkill County, PAPA145,0854,806−16%
35Wayne County, PAPA51,7034,765+51%
36Clearfield County, PAPA78,1004,642−63%
37Northumberland County, PAPA89,9204,473−31%
38Perry County, PAPA46,8064,187+7%
39Somerset County, PAPA72,0043,959−23%
40Bedford County, PAPA47,4803,781−25%
41Snyder County, PAPA39,6553,737+24%
42Huntingdon County, PAPA43,0013,631+36%
43Bradford County, PAPA59,6003,588−23%
44Indiana County, PAPA82,8783,491−11%
45Juniata County, PAPA23,4033,490+75%
46Carbon County, PAPA65,8683,483−19%
47Venango County, PAPA49,3463,331−1%
48Columbia County, PAPA66,1933,119−1%
49Clinton County, PAPA37,8702,975+25%
50Lawrence County, PAPA83,9112,897−18%
51Armstrong County, PAPA63,6982,762−23%
52Union County, PAPA42,3132,6940%
53McKean County, PAPA38,9842,657−4%
54Greene County, PAPA33,8852,236−20%
55Pike County, PAPA62,8082,190+29%
56Jefferson County, PAPA43,2552,123−30%
57Warren County, PAPA37,0382,068+2%
58Clarion County, PAPA36,6801,934−13%
59Susquehanna County, PAPA38,2371,835+14%
60Fulton County, PAPA14,4831,571−16%
61Potter County, PAPA15,8971,570+25%
62Wyoming County, PAPA25,7901,437−17%
63Elk County, PAPA29,9261,073−42%
64Montour County, PAPA17,868769−36%
65Cameron County, PAPA4,211567−3%
66Sullivan County, PAPA5,856246−2%
67Forest County, PAPA6,614228−10%
SHOWING 1–67 OF 67

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS