Voter file loaded June 4, 2026 · figures are from that file, held as a fixed record
Clinton County, Ohio has 23,331 active registered voters across 36 precincts, as of June 2026.
Party registration
Ohio doesn't register voters by party, so there's no party breakdown to show. Party lean is usually inferred from primary participation; that data is in the voter file and available inside Motion51.
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | CHESTER A | 853 | 620 | 72.68% |
| 2 | UNION SOUTH B | 558 | 405 | 72.58% |
| 3 | WILMINGTON 4-C | 571 | 414 | 72.5% |
| 4 | ADAMS A | 686 | 496 | 72.3% |
| 5 | CHESTER B | 609 | 436 | 71.59% |
| 6 | UNION NORTH A | 612 | 436 | 71.24% |
| 7 | UNION NORTH B | 532 | 376 | 70.68% |
| 8 | LIBERTY | 630 | 443 | 70.32% |
| 9 | ADAMS B | 732 | 511 | 69.81% |
| 10 | MARION | 851 | 586 | 68.86% |
Supervoters are active registered voters who cast a ballot in at least 3 of the last 4 November general elections (2018–2024). Percentages are precinct totals from the official state voter file — no individual voter information is shown. Precincts with fewer than 400 active voters are excluded.
How Clinton County voted for president
Election results are public records.
Clinton County at a glance.
Clinton County had an estimated 42,019 residents in July 2024, the 59th most populous of Ohio's 88 counties, essentially unchanged since the 2020 census. Of those, 32,565 are 18 or older, the voting-age population, and 19.7% are 65 or older. Its 23,331 active registered voters equal about 71.6% of that voting-age population.
It covers 409 square miles of land (103 people per square mile). The largest cities and towns are Wilmington (12,639), Blanchester (part) (4,226), Sabina (2,465), New Vienna (1,097) and Clarksville (536). The American Community Survey (2020-2024) puts it at a median age of 40.8, a median household income of $70,407, 19.3% of adults 25 and older holding a bachelor's degree or higher and 71.8% of occupied homes owned by the people living in them.
In 2024, 20,779 votes were cast for president, about 63.8% of the voting-age population; the Democratic ticket took 22.3% and the Republican ticket 76.9%. The two-party margin moved from R+30.3 in 2008 to R+54.6 in 2024.
- Population (2024 estimate)
- 42,019
- Population (2020 census base)
- 42,029
- Voting-age population (18+)
- 32,565
- Active voters per 100 adults
- 71.6
- Residents 65 and older
- 19.7%
- People per square mile
- 103
- Land area
- 409 sq mi
- Median age
- 40.8
- Median household income
- $70,407
- Adults 25+ with a bachelor's degree
- 19.3%
- Owner-occupied homes
- 71.8%
Largest cities and towns
- Wilmington 12,639
- Blanchester (part) 4,226
- Sabina 2,465
- New Vienna 1,097
- Clarksville 536
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 22.3% | 76.9% | R+54.6 | 20,779 |
| 2020 | 22.9% | 75.5% | R+52.6 | 20,527 |
| 2016 | 21.8% | 74.4% | R+52.6 | 18,100 |
| 2012 | 31.4% | 66.5% | R+35.1 | 17,648 |
| 2008 | 34.0% | 64.3% | R+30.3 | 19,305 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
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