Data as of November 4, 2026 · refreshed automatically from the official Florida voter file
Jefferson County, Florida has 9,998 active registered voters — 47.7% Republican, 38.2% Democratic, and 11.6% with no party affiliation, as of November 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 11.2 | 406 | 341 | 83.99% |
| 2 | 15.1 | 610 | 504 | 82.62% |
| 3 | 09.1 | 494 | 400 | 80.97% |
| 4 | 12.1 | 731 | 579 | 79.21% |
| 5 | 11.1 | 457 | 361 | 78.99% |
| 6 | 10.1 | 863 | 660 | 76.48% |
| 7 | 04.1 | 789 | 599 | 75.92% |
| 8 | 08.1 | 838 | 635 | 75.78% |
| 9 | 01.1 | 628 | 464 | 73.89% |
| 10 | 06.1 | 414 | 302 | 72.95% |
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 15,921 residents in July 2024, the 59th most populous of Florida's 67 counties, up 9.7% since the 2020 census. Of those, 13,256 are 18 or older, the voting-age population, and 24.9% are 65 or older. Its 9,998 active registered voters equal about 75.4% of that voting-age population.
It covers 598 square miles of land (27 people per square mile), and 82.7% of residents live outside any incorporated city or town. Its one incorporated place is Monticello (2,754 residents). The American Community Survey (2020-2024) puts it at a median age of 47.6, a median household income of $61,212, 19.2% of adults 25 and older holding a bachelor's degree or higher and 75.9% of occupied homes owned by the people living in them.
In 2024, 8,502 votes were cast for president, about 64.1% of the voting-age population; the Democratic ticket took 40.3% and the Republican ticket 58.9%. The two-party margin moved from D+3.7 in 2008 to R+18.6 in 2024.
- Population (2024 estimate)
- 15,921
- Population (2020 census base)
- 14,512
- Voting-age population (18+)
- 13,256
- Active voters per 100 adults
- 75.4
- Residents 65 and older
- 24.9%
- People per square mile
- 27
- Living outside incorporated places
- 82.7%
- Land area
- 598 sq mi
- Median age
- 47.6
- Median household income
- $61,212
- Adults 25+ with a bachelor's degree
- 19.2%
- Owner-occupied homes
- 75.9%
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 40.3% | 58.9% | R+18.6 | 8,502 |
| 2020 | 46.1% | 53.0% | R+6.9 | 8,451 |
| 2016 | 46.3% | 51.4% | R+5.1 | 7,641 |
| 2012 | 50.5% | 48.8% | D+1.7 | 7,808 |
| 2008 | 51.4% | 47.7% | D+3.7 | 7,957 |
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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