Data as of October 18, 2026 · refreshed automatically from the official California voter file
Lake County, CA has 37,747 active registered voters — 33.0% Republican, 35.2% Democratic, and 20.9% with no party affiliation, as of October 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 0000523-B | 461 | 307 | 66.59% |
| 2 | 0000515-B | 494 | 316 | 63.97% |
| 3 | 0000411 | 697 | 423 | 60.69% |
| 4 | 0000561-A | 439 | 265 | 60.36% |
| 5 | 0000131-A | 455 | 268 | 58.9% |
| 6 | 0000163 | 471 | 269 | 57.11% |
| 7 | 0000413 | 737 | 413 | 56.04% |
| 8 | 0000521 | 449 | 251 | 55.9% |
| 9 | 0000409 | 877 | 484 | 55.19% |
| 10 | 0000535-A | 513 | 283 | 55.17% |
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 Lake County voted for president
Election results are public records.
Lake County at a glance.
Lake County had an estimated 67,764 residents in July 2024, the 41st most populous of California's 58 counties, down 0.6% since the 2020 census. Of those, 52,937 are 18 or older, the voting-age population, and 24.8% are 65 or older. Its 37,747 active registered voters equal about 71.3% of that voting-age population.
It covers 1,255 square miles of land (54 people per square mile), and 67.9% of residents live outside any incorporated city or town. The largest cities and towns are Clearlake (16,636) and Lakeport (5,104). The American Community Survey (2020-2024) puts it at a median age of 44.1, a median household income of $60,621, 17.8% of adults 25 and older holding a bachelor's degree or higher and 72.2% of occupied homes owned by the people living in them.
In 2024, 26,759 votes were cast for president, about 50.5% of the voting-age population; the Democratic ticket took 47.8% and the Republican ticket 49.2%. The two-party margin moved from D+19.3 in 2008 to R+1.4 in 2024.
- Population (2024 estimate)
- 67,764
- Population (2020 census base)
- 68,164
- Voting-age population (18+)
- 52,937
- Active voters per 100 adults
- 71.3
- Residents 65 and older
- 24.8%
- People per square mile
- 54
- Living outside incorporated places
- 67.9%
- Land area
- 1,255 sq mi
- Median age
- 44.1
- Median household income
- $60,621
- Adults 25+ with a bachelor's degree
- 17.8%
- Owner-occupied homes
- 72.2%
Largest cities and towns
- Clearlake 16,636
- Lakeport 5,104
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 47.8% | 49.2% | R+1.4 | 26,759 |
| 2020 | 51.9% | 45.6% | D+6.3 | 28,800 |
| 2016 | 47.8% | 44.1% | D+3.7 | 13,045 |
| 2012 | 56.3% | 39.8% | D+16.5 | 16,274 |
| 2008 | 58.2% | 38.9% | D+19.3 | 25,542 |
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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