Pennsylvania Voting-age Population By County in 2021 (ACS-5Yrs)
Updated on February 28, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the voting-age population of Pennsylvania was 10.27M which was 79.15% of the total Pennsylvania population. Among all Pennsylvania counties, Philadelphia had the highest voting-age population (1.25M), followed by Allegheny (1.01M), and Montgomery (666.17K).
On the other hand, the counties with the least voting-age population were: Cameron (3.82K), Sullivan (5.31K), and Forest (6.59K).
The chart and table below shows the voting-age population of each county and the percentage of each county's population that are of voting-age.
You can see similar information for other states and by state for the United States.
Related Topics: Pennsylvania ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Pennsylvania Voting-age Population By County in 2021
Pennsylvania Voting-age Population By County in 2021
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| County | Voting-age Population | % of County Population |
|---|---|---|
| Adams | 82854 | 79.83 |
| Allegheny | 1010566 | 81.10 |
| Armstrong | 53223 | 80.68 |
| Beaver | 135372 | 80.45 |
| Bedford | 38333 | 80.31 |
| Berks | 330927 | 77.51 |
| Blair | 97855 | 79.47 |
| Bradford | 46842 | 77.77 |
| Bucks | 512214 | 79.55 |
| Butler | 154024 | 79.99 |
| Cambria | 107974 | 80.55 |
| Cameron | 3821 | 83.14 |
| Carbon | 52344 | 80.79 |
| Centre | 134968 | 84.95 |
| Chester | 410764 | 77.25 |
| Clarion | 30419 | 80.96 |
| Clearfield | 65858 | 81.64 |
| Clinton | 30084 | 79.54 |
| Columbia | 53395 | 82.13 |
| Crawford | 66877 | 79.15 |
| Cumberland | 204487 | 79.46 |
| Dauphin | 219630 | 77.28 |
| Delaware | 446478 | 77.80 |
| Elk | 24963 | 80.43 |
| Erie | 213733 | 78.61 |
| Fayette | 104322 | 80.59 |
| Forest | 6593 | 92.59 |
| Franklin | 120735 | 77.60 |
| Fulton | 11616 | 79.95 |
| Greene | 29168 | 80.47 |
| Huntingdon | 36419 | 81.92 |
| Indiana | 68395 | 81.79 |
| Jefferson | 34904 | 78.45 |
| Juniata | 18258 | 77.34 |
| Lackawanna | 170941 | 79.31 |
| Lancaster | 420239 | 76.34 |
| Lawrence | 68957 | 79.89 |
| Lebanon | 109808 | 77.07 |
| Lehigh | 287177 | 77.10 |
| Luzerne | 259497 | 79.89 |
| Lycoming | 90604 | 79.29 |
| McKean | 32493 | 79.93 |
| Mercer | 89532 | 80.50 |
| Mifflin | 35729 | 77.41 |
| Monroe | 134967 | 80.28 |
| Montgomery | 666170 | 78.29 |
| Montour | 14444 | 79.37 |
| Northampton | 249009 | 79.97 |
| Northumberland | 73620 | 80.15 |
| Perry | 36008 | 78.49 |
| Philadelphia | 1248317 | 78.17 |
| Pike | 47968 | 82.21 |
| Potter | 13062 | 79.27 |
| Schuylkill | 114653 | 80.01 |
| Snyder | 31516 | 79.03 |
| Somerset | 60797 | 81.79 |
| Sullivan | 5309 | 89.45 |
| Susquehanna | 31524 | 81.06 |
| Tioga | 32853 | 79.96 |
| Union | 35350 | 82.03 |
| Venango | 40988 | 80.67 |
| Warren | 31175 | 80.37 |
| Washington | 167836 | 80.27 |
| Wayne | 42717 | 83.36 |
| Westmoreland | 289507 | 81.53 |
| Wyoming | 21250 | 80.53 |
| York | 353736 | 77.81 |
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