Ranking of Pennsylvania Counties By Population with American Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 574.14K people in Pennsylvania with American ancestry. Among all Pennsylvania counties, Philadelphia County had the highest population with American ancestry (39.38K), followed by Montgomery County (34.92K), and Allegheny County (34.41K).
The chart and table below shows the top 10 counties with high number of people with American ancestry.
You can see similar information for other states and for other ancestry groups in Pennsylvania.
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Related Topics: Pennsylvania ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Pennsylvania Counties By Population with American Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Philadelphia County | 39375 |
| 2 | Montgomery County | 34925 |
| 3 | Allegheny County | 34407 |
| 4 | York County | 33081 |
| 5 | Lancaster County | 32764 |
| 6 | Bucks County | 28335 |
| 7 | Northampton County | 22936 |
| 8 | Franklin County | 20222 |
| 9 | Chester County | 17171 |
| 10 | Dauphin County | 17009 |
| 11 | Delaware County | 16578 |
| 12 | Berks County | 15121 |
| 13 | Westmoreland County | 13955 |
| 14 | Cumberland County | 13669 |
| 15 | Lehigh County | 12005 |
| 16 | Adams County | 10039 |
| 17 | Erie County | 9277 |
| 18 | Luzerne County | 9186 |
| 19 | Butler County | 8250 |
| 20 | Tioga County | 8204 |
| 21 | Monroe County | 8198 |
| 22 | Centre County | 7817 |
| 23 | Lackawanna County | 7804 |
| 24 | Mercer County | 7569 |
| 25 | Lebanon County | 7407 |
| 26 | Lycoming County | 6999 |
| 27 | Washington County | 6433 |
| 28 | Fayette County | 6327 |
| 29 | Blair County | 6297 |
| 30 | Cambria County | 5856 |
| 31 | Beaver County | 5679 |
| 32 | Mifflin County | 5410 |
| 33 | Schuylkill County | 5020 |
| 34 | Crawford County | 4857 |
| 35 | Clearfield County | 4693 |
| 36 | Perry County | 4511 |
| 37 | Wayne County | 4494 |
| 38 | Northumberland County | 4381 |
| 39 | Bradford County | 4159 |
| 40 | Bedford County | 3673 |
| 41 | Somerset County | 3522 |
| 42 | Indiana County | 3488 |
| 43 | Huntingdon County | 3479 |
| 44 | Carbon County | 3464 |
| 45 | Snyder County | 3264 |
| 46 | Juniata County | 3096 |
| 47 | Venango County | 2955 |
| 48 | Lawrence County | 2847 |
| 49 | Clinton County | 2845 |
| 50 | McKean County | 2784 |
| 51 | Columbia County | 2704 |
| 52 | Armstrong County | 2626 |
| 53 | Union County | 2516 |
| 54 | Greene County | 2443 |
| 55 | Jefferson County | 2288 |
| 56 | Pike County | 2246 |
| 57 | Warren County | 2020 |
| 58 | Clarion County | 1830 |
| 59 | Potter County | 1813 |
| 60 | Susquehanna County | 1798 |
| 61 | Fulton County | 1774 |
| 62 | Wyoming County | 1357 |
| 63 | Elk County | 1209 |
| 64 | Montour County | 751 |
| 65 | Cameron County | 442 |
| 66 | Forest County | 283 |
| 67 | Sullivan County | 206 |
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