Ranking of Pennsylvania Counties By Percentage of Population with Unclassified Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 2.87M people in Pennsylvania with Unclassified ancestry (22.09% of Pennsylvania population). Among all Pennsylvania counties, Forest County had the highest percentage of its population with Unclassified ancestry (38.63%), followed by Bedford County (37.08%), and Clearfield County (35.46%).
The chart and table below shows the top 10 counties with high percentage of its population having Unclassified 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 Percentage of Population with Unclassified Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Forest County | 38.63 |
| 2 | Bedford County | 37.08 |
| 3 | Clearfield County | 35.46 |
| 4 | Huntingdon County | 35.17 |
| 5 | Jefferson County | 34.83 |
| 6 | Union County | 34.37 |
| 7 | Greene County | 33.92 |
| 8 | Bradford County | 32.74 |
| 9 | Clinton County | 31.97 |
| 10 | Fulton County | 31.76 |
| 11 | Indiana County | 30.51 |
| 12 | Centre County | 30.07 |
| 13 | McKean County | 30.05 |
| 14 | Venango County | 29.89 |
| 15 | Potter County | 29.68 |
| 16 | Cameron County | 29.57 |
| 16 | Lycoming County | 29.57 |
| 17 | Clarion County | 29.40 |
| 18 | Crawford County | 28.40 |
| 19 | Armstrong County | 28.33 |
| 20 | Somerset County | 28.18 |
| 21 | Lebanon County | 27.77 |
| 22 | Fayette County | 27.73 |
| 23 | Blair County | 27.17 |
| 24 | Susquehanna County | 26.85 |
| 24 | Warren County | 26.85 |
| 25 | Dauphin County | 26.68 |
| 26 | Wyoming County | 26.67 |
| 27 | Mercer County | 26.65 |
| 28 | Berks County | 26.62 |
| 29 | Lancaster County | 26.43 |
| 30 | Washington County | 26.00 |
| 31 | Sullivan County | 25.97 |
| 32 | Columbia County | 24.99 |
| 33 | Perry County | 24.98 |
| 34 | Erie County | 24.73 |
| 35 | Cumberland County | 24.43 |
| 36 | York County | 24.36 |
| 37 | Northumberland County | 24.00 |
| 38 | Schuylkill County | 23.85 |
| 39 | Franklin County | 23.61 |
| 40 | Adams County | 23.24 |
| 41 | Montour County | 23.01 |
| 42 | Mifflin County | 22.83 |
| 43 | Wayne County | 22.73 |
| 44 | Snyder County | 22.21 |
| 45 | Beaver County | 21.76 |
| 46 | Elk County | 21.33 |
| 47 | Tioga County | 21.04 |
| 48 | Philadelphia County | 20.93 |
| 49 | Allegheny County | 20.72 |
| 50 | Lawrence County | 20.58 |
| 51 | Monroe County | 20.22 |
| 52 | Westmoreland County | 20.10 |
| 53 | Butler County | 19.57 |
| 54 | Cambria County | 19.43 |
| 55 | Pike County | 19.27 |
| 56 | Carbon County | 19.21 |
| 57 | Delaware County | 19.00 |
| 58 | Luzerne County | 18.74 |
| 59 | Bucks County | 18.35 |
| 60 | Chester County | 17.58 |
| 61 | Juniata County | 17.33 |
| 62 | Northampton County | 17.13 |
| 63 | Lackawanna County | 16.76 |
| 64 | Montgomery County | 16.70 |
| 65 | Lehigh County | 14.85 |
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