Colusa County, California ZIP codes
7 ZIP codes are in Colusa County, plus 2 that cross in from neighboring counties.
- ZIP codes
- 7
- Population in these ZIPs
- 22,045
- Avg. median income
- $79,900population-weighted
- Cities & towns
- 7
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ZIP codes in Colusa County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 95912 | Arbuckle | 4,855 | $86,457 | $418,400 |
| 95932 | Colusa | 7,701 | $66,964 | $368,200 |
| 95950 | Grimes | 287 | — | — |
| 95955 | Maxwell | 1,405 | — | $302,400 |
| 95970 | Princeton | 453 | $69,000 | $356,700 |
| 95979 | Stonyford | 558 | $24,766 | $278,600 |
| 95987 | Williams | 6,786 | $95,122 | $377,100 |
ZIP codes partly in Colusa County
These ZIP codes are mostly in a neighboring county but cover part of Colusa County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 95645 | Knights Landing | Yolo County | 1,314 | $61,652 | $420,800 |
| 95957 | Meridian | Sutter County | 680 | $78,333 | $437,900 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Colusa County
Nearby counties
Frequently asked questions
How many ZIP codes are in Colusa County, California?
7 ZIP codes are mainly in Colusa County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Colusa County?
ZIP codes in Colusa County use the city names Arbuckle, Colusa, Grimes, Maxwell, Princeton, Stonyford and Williams.