Colusa County, California: New American county. In 2024, voted R+28%. Democratic peak: D+64 in 1912.
Key facts
- 2024 presidential margin
- R+28MIT Election Lab
- Political typology
- New AmericanAkashic typology
- Population
- 21,9842024 5-year
- Median household income
- $75,6722024 5-year
- White (non-Hispanic)
- 38.5%2024 5-year
- Black
- 1.5%2024 5-year
- Hispanic / Latino
- 62.9%2024 5-year
- Peak Democratic margin
- D+64 in 1912MIT Election Lab
- Peak Republican margin
- R+36 in 2004MIT Election Lab
- Most similar
- Madera County, CA · similarity 0.99
2024 results by precinct
2024 precinct map of Colusa CountyPrecinct-level 2024 presidential results for Colusa County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | +31.4% |
| 1880 | +29.1% |
| 1884 | +26.7% |
| 1888 | +28.1% |
| 1892 | +26.1% |
| 1896 | +35.5% |
| 1900 | +23.7% |
| 1904 | +0.8% |
| 1908 | +17.7% |
| 1912 | +63.6% |
| 1916 | +31.1% |
| 1920 | −27.5% |
| 1924 | −24.6% |
| 1928 | −13.3% |
| 1932 | +41.6% |
| 1936 | +42.2% |
| 1940 | +19.7% |
| 1944 | +13.9% |
| 1948 | +5.6% |
| 1952 | −19.1% |
| 1956 | −6.5% |
| 1960 | −3.1% |
| 1964 | +21.3% |
| 1968 | −11.0% |
| 1972 | −19.2% |
| 1976 | −7.6% |
| 1980 | −25.9% |
| 1984 | −32.1% |
| 1988 | −20.4% |
| 1992 | −14.0% |
| 1996 | −17.7% |
| 2000 | −33.7% |
| 2004 | −35.6% |
| 2008 | −18.1% |
| 2012 | −21.3% |
| 2016 | −13.3% |
| 2020 | −16.6% |
| 2024 | −28.2% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 2,431 | 4,414 | 7,021 | ||
| R | 3,239 | 4,559 | 7,961 | ||
| R | 2,661 | 3,551 | 6,697 | ||
| R | 2,314 | 3,601 | 6,045 | ||
| R | 2,569 | 3,733 | 6,448 | ||
| R | 1,947 | 4,142 | 6,166 | ||
| R | 1,745 | 3,629 | 5,590 | ||
| R | 2,054 | 3,047 | 5,612 | ||
| R | 1,798 | 2,589 | 5,635 | ||
| R | 2,022 | 3,077 | 5,172 | ||
| R | 1,725 | 3,388 | 5,188 | ||
| R | 1,605 | 2,897 | 4,995 | ||
| R | 2,340 | 2,733 | 5,182 | ||
| R | 1,810 | 2,715 | 4,717 | ||
| R | 1,858 | 2,361 | 4,577 | ||
| D | 2,790 | 1,811 | 4,606 | ||
| R | 2,348 | 2,497 | 4,861 | ||
| R | 2,171 | 2,474 | 4,648 | ||
| R | 1,818 | 2,678 | 4,513 | ||
| D | 2,020 | 1,803 | 3,901 | ||
| D | 2,090 | 1,579 | 3,679 | ||
| D | 2,655 | 1,774 | 4,464 | ||
| D | 2,965 | 1,186 | 4,213 | ||
| D | 2,752 | 1,095 | 3,982 | ||
| R | 1,338 | 1,752 | 3,112 | ||
| R | 495 | 1,127 | 2,571 | ||
| R | 907 | 1,645 | 2,686 | ||
| D | 1,998 | 1,011 | 3,177 | ||
| D | 1,760 | 0 | 2,768 | ||
| D | 1,064 | 730 | 1,892 | ||
| D | 900 | 885 | 1,892 | ||
| D | 1,075 | 648 | 1,801 | ||
| D | 1,250 | 581 | 1,883 | ||
| D | 1,187 | 645 | 2,075 | ||
| D | 2,010 | 1,116 | 3,176 | ||
| D | 1,802 | 1,028 | 2,899 | ||
| D | 1,607 | 882 | 2,492 | ||
| D | 1,468 | 766 | 2,234 |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
7.4%
English
6.4%
Irish
5.2%
American
4.5%
Italian
2.5%
Scottish
1.3%
French
1.1%
African American
1.2%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 35.9 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$75,672
Colusa County ranks in the top 25% of US counties.
Colusa County$75,672
California$99,122
United States$80,734
Colusa County ranks in the top 25% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
11.4%
Child poverty is below the national average.
Children under 1812.6%
Working age (18–64)10.9%
Seniors (65+)11.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
46.9%
speak English only
Spanish51.4%
Other Indo-European1.4%
Other languages0.3%
Asian & Pacific Islander0.1%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 52.3% of residents not counted as adherents by any reporting body.
Colusa's economy revolves around rice, almonds, and cattle ranching, and its rural agricultural identity consistently produces some of the widest Republican presidential margins among California's Central Valley counties.
Colusa County has leaned Republican in recent presidential elections, reaching a Democratic margin of sixty-four points in 1912. Between 2020 and 2024 it moved twelve points toward the Republican candidate — part of the sharpest rightward shift recorded among any group of places in the country.
Its demographics describe the shift: a 39% non-Hispanic-white share, a median household income of $75,672, and a population of 21,984. The county's voting pattern over the last decade is most similar to that of Madera County and Tulare County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Colusa County, California. Akashic. https://akashic.app/county/06011/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Colusa County, California vote in 2024?
In 2024, Colusa County, California voted Republican by 28.2 points (R+28), carried by the Republican candidate. Out of 7,021 votes cast, 2,431 went Democratic and 4,414 went Republican.
What is Colusa County, California's political typology?
Akashic places Colusa County, California in the "New American" typology — Communities where a large share of households speak a language other than English — multilingual, Democratic-leaning overall, yet the hardest-swinging bloc toward the Republican Party in 2024. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 17 times, Republican 21 times, and other 0 times.
When did Colusa County, California last vote Democratic?
The most recent presidential election in which Colusa County, California voted Democratic was 1964.
How many people live in Colusa County, California?
Colusa County, California has a population of 21,984 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Colusa County, California?
Median household income in Colusa County, California is $75,672 — below the national median of $80,734. The California state median is $99,122.
What is the political history of Colusa County, California?
Akashic tracks 38 presidential elections in Colusa County, California from 1876 to 2024. Of those, 17 went Democratic and 21 went Republican. The county's typology — "New American" — captures where that record, its demographics, and its recent swing place it among American communities.