Data as of October 18, 2026 · refreshed automatically from the official California voter file
Mariposa County, CA has 11,799 active registered voters — 47.4% Republican, 26.2% Democratic, and 16.9% with no party affiliation, as of October 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 5002 | 607 | 407 | 67.05% |
| 2 | 3001 | 576 | 376 | 65.28% |
| 3 | 5005 | 484 | 314 | 64.88% |
| 4 | 5001 | 712 | 444 | 62.36% |
| 5 | 5004 | 629 | 392 | 62.32% |
| 6 | 1008 | 604 | 376 | 62.25% |
| 7 | 4003 | 689 | 428 | 62.12% |
| 8 | 4001-2 | 505 | 308 | 60.99% |
| 9 | 1003 | 468 | 276 | 58.97% |
| 10 | 3004 | 650 | 378 | 58.15% |
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 Mariposa County voted for president
Election results are public records.
Mariposa County at a glance.
Mariposa County had an estimated 17,048 residents in July 2024, the 53rd most populous of California's 58 counties, down 0.5% since the 2020 census. Of those, 14,107 are 18 or older, the voting-age population, and 31.3% are 65 or older. Its 11,799 active registered voters equal about 83.6% of that voting-age population.
It covers 1,449 square miles of land (12 people per square mile). The American Community Survey (2020-2024) puts it at a median age of 51.2, a median household income of $68,412, 31.8% of adults 25 and older holding a bachelor's degree or higher and 74.7% of occupied homes owned by the people living in them. In 2024, 9,509 votes were cast for president, about 67.4% of the voting-age population; the Democratic ticket took 38.1% and the Republican ticket 59.2%.
The two-party margin moved from R+12.4 in 2008 to R+21.1 in 2024.
- Population (2024 estimate)
- 17,048
- Population (2020 census base)
- 17,128
- Voting-age population (18+)
- 14,107
- Active voters per 100 adults
- 83.6
- Residents 65 and older
- 31.3%
- People per square mile
- 12
- Land area
- 1,449 sq mi
- Median age
- 51.2
- Median household income
- $68,412
- Adults 25+ with a bachelor's degree
- 31.8%
- Owner-occupied homes
- 74.7%
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 38.1% | 59.2% | R+21.1 | 9,509 |
| 2020 | 39.8% | 57.9% | R+18.1 | 10,280 |
| 2016 | 35.2% | 58.4% | R+23.2 | 8,877 |
| 2012 | 39.5% | 56.8% | R+17.3 | 7,805 |
| 2008 | 42.5% | 54.9% | R+12.4 | 9,651 |
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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