Data as of October 18, 2026 · refreshed automatically from the official California voter file
Santa Barbara County, CA has 248,976 active registered voters — 24.6% Republican, 46.3% Democratic, and 21.2% with no party affiliation, as of October 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 20-0462 | 815 | 671 | 82.33% |
| 2 | 30-0572 | 430 | 332 | 77.21% |
| 3 | 30-0618 | 474 | 356 | 75.11% |
| 4 | 33-1408 | 508 | 378 | 74.41% |
| 5 | 22-5402 | 2,216 | 1,629 | 73.51% |
| 6 | 23-1402 | 582 | 427 | 73.37% |
| 7 | 20-0520 | 1,409 | 1,030 | 73.1% |
| 8 | 34-1406 | 420 | 306 | 72.86% |
| 9 | 12-4408 | 1,033 | 748 | 72.41% |
| 10 | 20-0466 | 953 | 690 | 72.4% |
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 Santa Barbara County voted for president
Election results are public records.
Santa Barbara County at a glance.
Santa Barbara County had an estimated 444,500 residents in July 2024, the 20th most populous of California's 58 counties, down 0.8% since the 2020 census. Of those, 345,929 are 18 or older, the voting-age population, and 17.4% are 65 or older. Its 248,976 active registered voters equal about 72.0% of that voting-age population.
It covers 2,734 square miles of land (163 people per square mile), and 30.8% of residents live outside any incorporated city or town. The largest cities and towns are Santa Maria (111,346), Santa Barbara (87,291), Lompoc (43,594), Goleta (32,611) and Carpinteria (12,876). The American Community Survey (2020-2024) puts it at a median age of 34.6, a median household income of $98,161, 36.8% of adults 25 and older holding a bachelor's degree or higher and 52.4% of occupied homes owned by the people living in them.
In 2024, 184,715 votes were cast for president, about 53.4% of the voting-age population; the Democratic ticket took 61.8% and the Republican ticket 35.1%. The two-party margin moved from D+22.9 in 2008 to D+26.7 in 2024.
- Population (2024 estimate)
- 444,500
- Population (2020 census base)
- 448,217
- Voting-age population (18+)
- 345,929
- Active voters per 100 adults
- 72.0
- Residents 65 and older
- 17.4%
- People per square mile
- 163
- Living outside incorporated places
- 30.8%
- Land area
- 2,734 sq mi
- Median age
- 34.6
- Median household income
- $98,161
- Adults 25+ with a bachelor's degree
- 36.8%
- Owner-occupied homes
- 52.4%
Largest cities and towns
- Santa Maria 111,346
- Santa Barbara 87,291
- Lompoc 43,594
- Goleta 32,611
- Carpinteria 12,876
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 61.8% | 35.1% | D+26.7 | 184,715 |
| 2020 | 64.9% | 32.8% | D+32.1 | 200,288 |
| 2016 | 61.0% | 32.7% | D+28.3 | 164,224 |
| 2012 | 57.2% | 40.1% | D+17.1 | 147,249 |
| 2008 | 60.4% | 37.5% | D+22.9 | 174,912 |
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.
Running in Santa Barbara County?
The voter file is loaded. Create your campaign and start canvassing in minutes.
Start free in Santa Barbara CountyAlso see: Motion51 in California · Pricing