Ohio 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 Ohio was 9.14M which was 77.66% of the total Ohio population. Among all Ohio counties, Franklin had the highest voting-age population (1.01M), followed by Cuyahoga (1.00M), and Hamilton (635.50K).
On the other hand, the counties with the least voting-age population were: Vinton (10.00K), Monroe (10.73K), and Morgan (11.00K).
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: Ohio ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Ohio Voting-age Population By County in 2021
Ohio Voting-age Population By County in 2021
County | Voting-age Population | % of County Population |
|---|---|---|
| Franklin | 1,005,778 | 76.57 |
| Cuyahoga | 1,000,135 | 79.15 |
| Hamilton | 635,504 | 76.86 |
| Summit | 426,603 | 78.92 |
| Montgomery | 416,587 | 77.70 |
| Lucas | 331,142 | 76.79 |
| Butler | 296,271 | 76.39 |
| Stark | 293,541 | 78.34 |
| Lorain | 242,827 | 77.90 |
| Lake | 185,686 | 79.97 |
| Mahoning | 182,538 | 79.70 |
| Warren | 180,707 | 75.43 |
| Trumbull | 160,351 | 79.30 |
| Clermont | 159,866 | 76.99 |
| Delaware | 155,942 | 73.86 |
| Medina | 141,014 | 77.72 |
| Licking | 136,147 | 76.72 |
| Greene | 132,303 | 79.20 |
| Portage | 131,636 | 81.31 |
| Fairfield | 119,534 | 75.84 |
| Clark | 105,252 | 77.37 |
| Wood | 104,934 | 79.54 |
| Richland | 97,214 | 78.08 |
| Wayne | 88,289 | 75.55 |
| Miami | 82,794 | 76.73 |
| Ohio | 9,139,934 | 77.66 |
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