Voter file loaded June 5, 2026 · figures are from that file, held as a fixed record
Jefferson County, Ohio has 35,712 active registered voters across 57 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 | PRECINCT SHELLEY | 1,035 | 757 | 73.14% |
| 2 | PRECINCT MINGO 2 | 870 | 622 | 71.49% |
| 3 | PRECINCT SALEM | 517 | 359 | 69.44% |
| 4 | PRECINCT BANTAM RIDGE | 992 | 688 | 69.35% |
| 5 | PRECINCT STEUBENVILLE 6-3 | 730 | 502 | 68.77% |
| 6 | PRECINCT WELLS | 856 | 586 | 68.46% |
| 7 | PRECINCT WINTERSVILLE A | 708 | 484 | 68.36% |
| 8 | PRECINCT BRENTWOOD | 660 | 450 | 68.18% |
| 9 | PRECINCT BELVEDERE | 527 | 354 | 67.17% |
| 10 | PRECINCT PLEASANT HILL 1 | 646 | 433 | 67.03% |
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 Jefferson County voted for president
Election results are public records.
Jefferson County at a glance.
Jefferson County had an estimated 63,900 residents in July 2024, the 39th most populous of Ohio's 88 counties, down 2.1% since the 2020 census. Of those, 51,495 are 18 or older, the voting-age population, and 23.4% are 65 or older. Its 35,712 active registered voters equal about 69.4% of that voting-age population.
It covers 408 square miles of land (157 people per square mile). The largest cities and towns are Steubenville (18,029), Toronto (5,187), Wintersville (3,672), Mingo Junction (3,250) and Tiltonsville (1,220). The American Community Survey (2020-2024) puts it at a median age of 44.3, a median household income of $59,055, 20.3% of adults 25 and older holding a bachelor's degree or higher and 70.5% of occupied homes owned by the people living in them.
In 2024, 31,257 votes were cast for president, about 60.7% of the voting-age population; the Democratic ticket took 27.5% and the Republican ticket 71.4%. The two-party margin moved from D+0.2 in 2008 to R+43.9 in 2024.
- Population (2024 estimate)
- 63,900
- Population (2020 census base)
- 65,253
- Voting-age population (18+)
- 51,495
- Active voters per 100 adults
- 69.4
- Residents 65 and older
- 23.4%
- People per square mile
- 157
- Land area
- 408 sq mi
- Median age
- 44.3
- Median household income
- $59,055
- Adults 25+ with a bachelor's degree
- 20.3%
- Owner-occupied homes
- 70.5%
Largest cities and towns
- Steubenville 18,029
- Toronto 5,187
- Wintersville 3,672
- Mingo Junction 3,250
- Tiltonsville 1,220
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 27.5% | 71.4% | R+43.9 | 31,257 |
| 2020 | 30.0% | 68.4% | R+38.4 | 33,362 |
| 2016 | 30.3% | 65.9% | R+35.6 | 31,346 |
| 2012 | 46.3% | 51.7% | R+5.4 | 32,327 |
| 2008 | 49.1% | 48.9% | D+0.2 | 35,939 |
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.
Running in Jefferson County?
The voter file is loaded. Create your campaign and start canvassing in minutes.
Start free in Jefferson CountyAlso see: Motion51 in Ohio · How to run for office in Jefferson County · Pricing