There are 7 zip codes in Colusa County, California. The most populated is 95932, located in Colusa. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
959327,789Colusa
959876,504Williams
959124,908Arbuckle
959551,413Maxwell
95970466Princeton
95950442Grimes
95979374Stonyford

Zip Codes in Colusa County, California by Population (2024)