Data as of October 18, 2026 · refreshed automatically from the official California voter file
Stanislaus County, CA has 300,548 active registered voters — 35.5% Republican, 36.1% Democratic, and 20.2% with no party affiliation, as of October 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 128012.00 | 763 | 554 | 72.61% |
| 2 | 128018.00 | 979 | 698 | 71.3% |
| 3 | 115001.01 | 523 | 370 | 70.75% |
| 4 | 115004.01 | 769 | 540 | 70.22% |
| 5 | 115001.03 | 449 | 312 | 69.49% |
| 6 | 120004.01 | 748 | 519 | 69.39% |
| 7 | 116003.02 | 653 | 452 | 69.22% |
| 8 | 117048.02 | 734 | 507 | 69.07% |
| 9 | 117056.00 | 724 | 496 | 68.51% |
| 10 | 117035.00 | 504 | 345 | 68.45% |
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 Stanislaus County voted for president
Election results are public records.
Stanislaus County at a glance.
Stanislaus County had an estimated 556,972 residents in July 2024, the 16th most populous of California's 58 counties, up 0.7% since the 2020 census. Of those, 412,240 are 18 or older, the voting-age population, and 14.3% are 65 or older. Its 300,548 active registered voters equal about 72.9% of that voting-age population.
It covers 1,496 square miles of land (372 people per square mile), and 19.8% of residents live outside any incorporated city or town. The largest cities and towns are Modesto (220,592), Turlock (72,888), Ceres (49,253), Riverbank (25,625) and Patterson (25,495). The American Community Survey (2020-2024) puts it at a median age of 34.9, a median household income of $81,468, 19.6% of adults 25 and older holding a bachelor's degree or higher and 61.2% of occupied homes owned by the people living in them.
In 2024, 197,472 votes were cast for president, about 47.9% of the voting-age population; the Democratic ticket took 43.2% and the Republican ticket 54.2%. The two-party margin moved from D+1.8 in 2008 to R+11.0 in 2024.
- Population (2024 estimate)
- 556,972
- Population (2020 census base)
- 553,285
- Voting-age population (18+)
- 412,240
- Active voters per 100 adults
- 72.9
- Residents 65 and older
- 14.3%
- People per square mile
- 372
- Living outside incorporated places
- 19.8%
- Land area
- 1,496 sq mi
- Median age
- 34.9
- Median household income
- $81,468
- Adults 25+ with a bachelor's degree
- 19.6%
- Owner-occupied homes
- 61.2%
Largest cities and towns
- Modesto 220,592
- Turlock 72,888
- Ceres 49,253
- Riverbank 25,625
- Patterson 25,495
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 43.2% | 54.2% | R+11.0 | 197,472 |
| 2020 | 49.3% | 48.5% | D+0.8 | 214,876 |
| 2016 | 47.4% | 46.7% | D+0.7 | 156,141 |
| 2012 | 49.2% | 48.4% | D+0.8 | 143,620 |
| 2008 | 49.9% | 48.1% | D+1.8 | 161,015 |
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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