Data as of October 18, 2026 · refreshed automatically from the official California voter file
Mendocino County, CA has 54,125 active registered voters — 23.5% Republican, 45.7% Democratic, and 21.4% with no party affiliation, as of October 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 440033.00 | 415 | 300 | 72.29% |
| 2 | 550030.00 | 434 | 301 | 69.35% |
| 3 | 440150.00 | 458 | 294 | 64.19% |
| 4 | 440040.00 | 522 | 332 | 63.6% |
| 5 | 550040.00 | 478 | 300 | 62.76% |
| 6 | 440101.00 | 429 | 264 | 61.54% |
| 7 | 211160.00 | 443 | 272 | 61.4% |
| 8 | 110040.00 | 400 | 243 | 60.75% |
| 9 | 110120.00 | 408 | 237 | 58.09% |
| 10 | 310120.00 | 447 | 257 | 57.49% |
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 Mendocino County voted for president
Election results are public records.
Mendocino County at a glance.
Mendocino County had an estimated 89,175 residents in July 2024, the 38th most populous of California's 58 counties, down 2.6% since the 2020 census. Of those, 70,848 are 18 or older, the voting-age population, and 25.8% are 65 or older. Its 54,125 active registered voters equal about 76.4% of that voting-age population.
It covers 3,507 square miles of land (25 people per square mile), and 68.1% of residents live outside any incorporated city or town. The largest cities and towns are Ukiah (16,067), Fort Bragg (7,117), Willits (4,844) and Point Arena (449). The American Community Survey (2020-2024) puts it at a median age of 44.1, a median household income of $68,092, 25.2% of adults 25 and older holding a bachelor's degree or higher and 61.7% of occupied homes owned by the people living in them.
In 2024, 39,216 votes were cast for president, about 55.4% of the voting-age population; the Democratic ticket took 61.3% and the Republican ticket 34.5%. The two-party margin moved from D+42.8 in 2008 to D+26.8 in 2024.
- Population (2024 estimate)
- 89,175
- Population (2020 census base)
- 91,587
- Voting-age population (18+)
- 70,848
- Active voters per 100 adults
- 76.4
- Residents 65 and older
- 25.8%
- People per square mile
- 25
- Living outside incorporated places
- 68.1%
- Land area
- 3,507 sq mi
- Median age
- 44.1
- Median household income
- $68,092
- Adults 25+ with a bachelor's degree
- 25.2%
- Owner-occupied homes
- 61.7%
Largest cities and towns
- Ukiah 16,067
- Fort Bragg 7,117
- Willits 4,844
- Point Arena 449
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 61.3% | 34.5% | D+26.8 | 39,216 |
| 2020 | 66.4% | 30.6% | D+35.8 | 43,336 |
| 2016 | 60.4% | 31.2% | D+29.2 | 11,435 |
| 2012 | 66.2% | 28.6% | D+37.6 | 17,928 |
| 2008 | 69.6% | 26.8% | D+42.8 | 40,016 |
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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