Colusa County, California
Precinct data
Results by precinct
19 precincts · 7,021 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -106106 | 408 | 621 | 18 | 1,047 | 39.0% | 59.3% | R+20.3 |
|---|---|---|---|---|---|---|---|
| Precinct -214214 | 208 | 466 | 22 | 696 | 29.9% | 67.0% | R+37.1 |
| Precinct -213213 | 247 | 414 | 24 | 685 | 36.1% | 60.4% | R+24.4 |
| Precinct -105105 | 232 | 409 | 15 | 656 | 35.4% | 62.3% | R+27.0 |
| Precinct -401401 | 124 | 455 | 7 | 586 | 21.2% | 77.6% | R+56.5 |
| Precinct -324324 | 259 | 262 | 15 | 536 | 48.3% | 48.9% | R+0.6 |
| Precinct -512512 | 198 | 242 | 9 | 449 | 44.1% | 53.9% | R+9.8 |
| Precinct -513513 | 131 | 269 | 12 | 412 | 31.8% | 65.3% | R+33.5 |
| Precinct -323323 | 161 | 176 | 10 | 347 | 46.4% | 50.7% | R+4.3 |
| Precinct -427427 | 158 | 114 | 11 | 283 | 55.8% | 40.3% | D+15.5 |
| Precinct -500500 | 50 | 215 | 11 | 276 | 18.1% | 77.9% | R+59.8 |
| Precinct -301301 | 44 | 183 | 5 | 232 | 19.0% | 78.9% | R+59.9 |
| Precinct -203203 | 66 | 141 | 5 | 212 | 31.1% | 66.5% | R+35.4 |
| Precinct -406406 | 48 | 96 | 5 | 149 | 32.2% | 64.4% | R+32.2 |
| Precinct -408408 | 32 | 94 | 3 | 129 | 24.8% | 72.9% | R+48.1 |
| Precinct -405405 | 13 | 88 | 2 | 103 | 12.6% | 85.4% | R+72.8 |
| Precinct -202202 | 18 | 83 | 0 | 101 | 17.8% | 82.2% | R+64.4 |
| Precinct -407407 | 16 | 44 | 1 | 61 | 26.2% | 72.1% | R+45.9 |
| Precinct -505505 | 18 | 42 | 1 | 61 | 29.5% | 68.9% | R+39.3 |
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% |
U.S. Senate
Registered voters
By party of registration, over time
Registration leans Republican; the presidential vote runs 19 points more Democratic.
10,515 registered voters · 2024 · up from 10,139 in 2022
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−187 net domestic migration · 2025
Net −1,623 over 2011–2025 · gain loss
Arrivals reported $47,215 in average income, against $73,575 for residents who stayed — 36% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+7.2 on average — 35 points more Democratic-leaning than Colusa County, CA itself (R+28.2).
Where arrivals came from lean of each source
- Yolo County, CA56D+36.2
- Sacramento County, CA39D+19.7
- Sutter County, CA25R+31.4
- Butte County, CA22R+3.1
- Glenn County, CA22R+34.9
Where departures went households, 2022–23
- Yolo County, CA50
- Sacramento County, CA45
- Sutter County, CA38
- Glenn County, CA33
- Butte County, CA32
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −250 |
| 2012 | −167 |
| 2013 | −210 |
| 2014 | −239 |
| 2015 | −69 |
| 2016 | +115 |
| 2017 | −40 |
| 2018 | −237 |
| 2019 | +10 |
| 2021 | −32 |
| 2022 | −138 |
| 2023 | −10 |
| 2024 | −169 |
| 2025 | −187 |
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.
Across the recorded series it reached a Democratic high of 63.6 points in 1912 and a Republican high of 35.6 points in 2004. Between 2020 and 2024 the county moved 11.7 points toward the Republican candidate; the 2024 margin was 28.2 points.
A population of 21,984, a 30% non-Hispanic-white share, and a median household income of $75,672 describe the county. The county's voting pattern over the last decade is most similar to that of Madera County and Glenn County.
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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 →
Colusa County, California. Akashic. https://akashic.app/county/06011/. Accessed May 20, 2026. License: CC BY 4.0.