Colusa County is located in the northern part of the state of California, United States, in the Sacramento River Valley. The county includes small cities, agricultural communities, river towns, and rural neighborhoods. ZIP codes in Colusa County range from 95912 to 95979 and are administered by the United States Postal Service (USPS) to support accurate mail delivery, address lookup, and local administration across all places in the county.
Key Information About Colusa County ZIP Codes
| Item | Details |
|---|---|
| County | Colusa County |
| State | California |
| ZIP Code Range | 95912 – 95979 |
| County Seat | Colusa |
| Largest City | Colusa |
| Country | United States |
| Continent | North America |
| Postal Authority | United States Postal Service (USPS) |
ZIP Codes of Colusa County by City & Community
For more details on ZIP codes in Colusa County, see the tables of cities, towns, communities, and notable neighborhoods below.
Colusa City & Surrounding Area (95932 – 95912)
| Place / Location | ZIP Code | State |
|---|---|---|
| Colusa Downtown | 95932 | California |
| Colusa North | 95932 | California |
| Colusa South | 95932 | California |
| Colusa East | 95932 | California |
| Colusa West | 95932 | California |
| College City | 95932 | California |
| Fouts Springs Area | 95932 | California |
| Stonyford Road Area | 95932 | California |
| Old Highway 99 Area | 95932 | California |
| Highway 16 Corridor | 95932 | California |
Williams & Western County Area (95987 – 95988)
| Place / Location | ZIP Code | State |
|---|---|---|
| Williams Central | 95987 | California |
| Williams North | 95987 | California |
| Williams South | 95987 | California |
| Williams East | 95987 | California |
| Williams West | 95987 | California |
| Williams PO Boxes | 95988 | California |
| Grove Lane Area | 95987 | California |
| Lander Way Area | 95987 | California |
| County Road 53 Area | 95987 | California |
| Williams Rural Zones | 95987 | California |
Maxwell, Arbuckle & South County Area (95955 – 95930 – 95979)
| Place / Location | ZIP Code | State |
|---|---|---|
| Maxwell | 95955 | California |
| Maxwell North | 95955 | California |
| Maxwell South | 95955 | California |
| Arbuckle | 95912 | California |
| Arbuckle North | 95912 | California |
| Arbuckle South | 95912 | California |
| Princeton | 95971 | California |
| Princeton East | 95971 | California |
| Princeton West | 95971 | California |
| County Road 64 Area | 95955 | California |
Colusa County includes additional small farm neighborhoods, valley roads, ranch areas, and rural localities that fall within the ZIP codes listed above. These areas receive mail and services through the USPS delivery routes of the main postal communities across the county.
About Colusa County ZIP Code
Each ZIP code in Colusa County helps organize mail delivery across cities, towns, farmland, and rural areas. Colusa and Williams are the main population centers, and both have multiple service areas recognized by USPS. Smaller communities like Maxwell, Arbuckle, and Princeton also have designated ZIP codes that cover local residents and farms.
Using the correct ZIP code helps mail and packages arrive on time. ZIP codes also support deliveries, emergency services, and accurate address searches throughout the county.