San Luis Obispo County, California
AkashicSan Luis Obispo County, CAHarrisD+10.9
2024 precinct map of San Luis Obispo CountyPrecinct-level 2024 presidential results for San Luis Obispo County, with each precinct boundary colored by Democratic-vs-Republican margin, and gold where an independent or third-party candidate carried the precinct.
How it voted
Share of the 2024 vote
| Kamala Harris ✓Democratic | 53.9% | 81,314 |
|---|---|---|
| Donald TrumpRepublican | 43.1% | 64,932 |
| Robert F Kennedy Jr.American Independent | 1.5% | 2,188 |
Harris +50Trump +50
136 precincts · 150,766 votes. Hover any precinct for its result.
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1876–2024.
38 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| D | 53.9%Harris81,314 | 43.1%Trump64,932 | 1.5%Kennedy2,188 | 150,766 | ||
| D | 55.3%Biden88,310 | 42.2%Trump67,436 | 1.5%Jorgensen2,408 | 159,714 | ||
| D | 48.9%Clinton67,107 | 40.9%Trump56,164 | 4.7%Johnson6,473 | 137,202 | ||
| D | 48.6%Obama61,258 | 47.6%Romney59,967 | 1.4%Johnson1,776 | 125,966 | ||
| D | 51.2%Obama68,176 | 45.9%McCain61,055 | 2.9%Nader3,924 | 133,155 | ||
| R | 45.5%Kerry58,742 | 52.7%Bush67,995 | 1.8%Badnarik2,313 | 129,050 | ||
| R | 40.9%Gore44,526 | 52.2%Bush56,859 | 6.0%Nader6,523 | 108,886 | ||
| R | 40.2%Clinton40,395 | 46.5%Dole46,733 | 8.2%Perot8,204 | 100,500 | ||
| D | 38.4%Clinton40,136 | 34.8%Bush36,384 | 26.1%Perot27,314 | 104,619 | ||
| R | 42.7%Dukakis35,667 | 55.8%Bush46,613 | 1.4%Paul1,187 | 83,467 | ||
| R | 35.0%Mondale26,946 | 63.7%Reagan49,035 | 1.3%Bergland969 | 76,950 | ||
| R | 29.5%Carter20,508 | 55.6%Reagan38,631 | 14.9%Anderson10,388 | 69,527 | ||
| R | 45.9%Carter24,926 | 51.2%Ford27,785 | 2.9%Macbride1,587 | 54,298 | ||
| R | 40.7%McGovern20,779 | 56.0%Nixon28,566 | 3.3%Schmitz1,688 | 51,033 | ||
| R | 41.8%Humphrey15,828 | 51.3%Nixon19,420 | 7.0%Wallace2,633 | 37,881 | ||
| D | 59.8%Johnson22,252 | 40.1%Goldwater14,906 | 0.1%Hass28 | 37,186 | ||
| R | 45.3%Kennedy14,975 | 54.0%Nixon17,862 | 0.7%Byrd218 | 33,055 | ||
| R | 41.1%Stevenson11,407 | 58.5%Eisenhower16,223 | 0.4%Andrews118 | 27,748 | ||
| R | 34.1%Stevenson8,761 | 65.1%Eisenhower16,733 | 0.8%Hallinan197 | 25,691 | ||
| R | 42.1%Truman8,135 | 53.5%Dewey10,325 | 4.4%Thurmond844 | 19,304 | ||
| D | 50.6%Roosevelt8,068 | 48.9%Dewey7,793 | 0.5%Thomas75 | 15,936 | ||
| D | 53.4%Roosevelt8,499 | 45.3%Willkie7,204 | 1.4%Thomas217 | 15,920 | ||
| D | 61.1%Roosevelt7,889 | 37.3%Landon4,812 | 1.6%Lemke205 | 12,906 | ||
| D | 65.8%Roosevelt7,933 | 28.6%Hoover3,449 | 5.6%Thomas680 | 12,062 | ||
| R | 37.4%Smith3,336 | 60.8%Hoover5,425 | 1.8%Thomas159 | 8,920 | ||
| R | 9.4%Davis731 | 49.0%Coolidge3,804 | 41.6%La Follette3,226 | 7,761 | ||
| R | 23.9%Cox1,606 | 61.3%Harding4,123 | 14.8%Debs996 | 6,725 | ||
| D | 49.9%Wilson3,539 | 40.2%Hughes2,854 | 9.9%Benson706 | 7,099 | ||
| O | 40.5%Wilson2,248 | 0.0%Taft0 | 59.5%Roosevelt3,305 | 5,553 | ||
| R | 34.9%Bryan1,381 | 50.8%Taft2,008 | 14.3%Debs567 | 3,956 | ||
| R | 31.8%Parker1,167 | 54.9%Roosevelt2,015 | 13.2%Debs485 | 3,667 | ||
| D | 50.2%Bryan1,713 | 45.8%McKinley1,564 | 4.0%Woolley137 | 3,414 | ||
| D | 53.8%Bryan2,056 | 43.7%McKinley1,671 | 2.4%Palmer93 | 3,820 | ||
| R | 31.9%Cleveland1,199 | 38.1%Harrison1,433 | 30.0%Weaver1,129 | 3,761 | ||
| R | 46.6%Cleveland1,585 | 49.7%Harrison1,689 | 3.7%Fisk126 | 3,400 | ||
| R | 44.6%Cleveland1,069 | 51.4%Blaine1,233 | 4.0%Butler95 | 2,397 | ||
| R | 42.0%Hancock729 | 47.8%Garfield830 | 10.2%Weaver177 | 1,736 | ||
| D | 55.0%Tilden944 | 45.0%Hayes772 | 0.0% | 1,716 |
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | +10.0% |
| 1880 | −5.8% |
| 1884 | −6.8% |
| 1888 | −3.1% |
| 1892 | −6.2% |
| 1896 | +10.1% |
| 1900 | +4.4% |
| 1904 | −23.1% |
| 1908 | −15.8% |
| 1912 | +40.5% |
| 1916 | +9.6% |
| 1920 | −37.4% |
| 1924 | −39.6% |
| 1928 | −23.4% |
| 1932 | +37.2% |
| 1936 | +23.8% |
| 1940 | +8.1% |
| 1944 | +1.7% |
| 1948 | −11.3% |
| 1952 | −31.0% |
| 1956 | −17.4% |
| 1960 | −8.7% |
| 1964 | +19.8% |
| 1968 | −9.5% |
| 1972 | −15.3% |
| 1976 | −5.3% |
| 1980 | −26.1% |
| 1984 | −28.7% |
| 1988 | −13.1% |
| 1992 | +3.6% |
| 1996 | −6.3% |
| 2000 | −11.3% |
| 2004 | −7.2% |
| 2008 | +5.3% |
| 2012 | +1.0% |
| 2016 | +8.0% |
| 2020 | +13.1% |
| 2024 | +10.9% |
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2022 | 181,647 | 69,616 | 62,355 | 35,497 | 14,179 |
| 2024 | 179,396 | 68,965 | 62,701 | 32,551 | 15,179 |
Source: California Secretary of State
Home to Cal Poly San Luis Obispo, the county's electorate skews younger and more educated than its Central Coast neighbors, a demographic mix that has steadily widened its Democratic presidential margin over the past two decades.
Across the recorded series it reached a Democratic high of 40.5 points in 1912 and a Republican high of 39.6 points in 1924. Between 2020 and 2024 the county moved 2.2 points toward the Republican candidate; the 2024 margin was 10.9 points.
A population of 281,555, a 65% non-Hispanic-white share, and a median household income of $97,446 describe the county. The county's voting pattern over the last decade is most similar to that of Larimer County and Forsyth County.
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Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
San Luis Obispo County, California. Akashic. https://akashic.app/county/06079/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did San Luis Obispo County, California vote in 2024?
In 2024, San Luis Obispo County, California voted Democratic by 10.9 points (D+10.9), carried by the Democratic candidate. Out of 150,766 votes cast, 81,314 went Democratic and 64,932 went Republican.
When did San Luis Obispo County, California last vote Republican?
The most recent presidential election in which San Luis Obispo County, California voted Republican was 2004.
How many people live in San Luis Obispo County, California?
San Luis Obispo County, California has a population of 281,555 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in San Luis Obispo County, California?
Median household income in San Luis Obispo County, California is $97,446 — above the national median of $80,734. The California state median is $99,122.
What is the political history of San Luis Obispo County, California?
Akashic tracks 38 presidential elections in San Luis Obispo County, California from 1876 to 2024. Of those, 15 went Democratic and 22 went Republican.