Data as of October 18, 2026 · refreshed automatically from the official California voter file
Merced County, CA has 136,956 active registered voters — 29.8% Republican, 39.4% Democratic, and 23.3% with no party affiliation, as of October 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 47116 | 437 | 292 | 66.82% |
| 2 | 54137 | 1,126 | 692 | 61.46% |
| 3 | 25120 | 428 | 261 | 60.98% |
| 4 | 37125 | 865 | 520 | 60.12% |
| 5 | 27119 | 527 | 316 | 59.96% |
| 6 | 37128 | 989 | 585 | 59.15% |
| 7 | 37127 | 825 | 483 | 58.55% |
| 8 | 25117 | 1,726 | 1,001 | 58.0% |
| 9 | 47226 | 479 | 271 | 56.58% |
| 10 | 25118 | 879 | 497 | 56.54% |
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 Merced County voted for president
Election results are public records.
Merced County at a glance.
Merced County had an estimated 296,774 residents in July 2024, the 23rd most populous of California's 58 counties, up 5.1% since the 2020 census. Of those, 214,218 are 18 or older, the voting-age population, and 12.0% are 65 or older. Its 136,956 active registered voters equal about 63.9% of that voting-age population.
It covers 1,938 square miles of land (153 people per square mile), and 31.4% of residents live outside any incorporated city or town. The largest cities and towns are Merced (96,073), Los Banos (48,684), Atwater (32,248), Livingston (14,767) and Gustine (6,138). The American Community Survey (2020-2024) puts it at a median age of 31.8, a median household income of $65,510, 15.3% of adults 25 and older holding a bachelor's degree or higher and 54.0% of occupied homes owned by the people living in them.
In 2024, 86,392 votes were cast for president, about 40.3% of the voting-age population; the Democratic ticket took 46.5% and the Republican ticket 50.9%. The two-party margin moved from D+8.3 in 2008 to R+4.4 in 2024.
- Population (2024 estimate)
- 296,774
- Population (2020 census base)
- 282,447
- Voting-age population (18+)
- 214,218
- Active voters per 100 adults
- 63.9
- Residents 65 and older
- 12.0%
- People per square mile
- 153
- Living outside incorporated places
- 31.4%
- Land area
- 1,938 sq mi
- Median age
- 31.8
- Median household income
- $65,510
- Adults 25+ with a bachelor's degree
- 15.3%
- Owner-occupied homes
- 54.0%
Largest cities and towns
- Merced 96,073
- Los Banos 48,684
- Atwater 32,248
- Livingston 14,767
- Gustine 6,138
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 46.5% | 50.9% | R+4.4 | 86,392 |
| 2020 | 54.1% | 43.5% | D+10.6 | 90,541 |
| 2016 | 51.4% | 43.5% | D+7.9 | 42,523 |
| 2012 | 51.7% | 46.3% | D+5.4 | 50,538 |
| 2008 | 53.3% | 45.0% | D+8.3 | 63,808 |
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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