County Postal Hub • FIPS 06011
Colusa County, CA ZIP Codes & Directory
Complete postal guide for Colusa County, California. Featuring the official county seat of Colusa, largest municipality Colusa, and serving 5 incorporated municipal entities.
County Seat Colusa
Total Population 21,839
Land Area 1,151 sq mi
FIPS Code 06011
Municipalities Located in Colusa County
Incorporated Cities, Towns, and Villages
5 Cities
0 Towns
Active USPS ZIP Codes in Colusa County
Standard delivery zones and geographic service boundaries
Frequently Asked Questions About Colusa County, CA
What is the county seat and largest city in Colusa County? ▾
The official county seat of Colusa County is Colusa, and its largest incorporated municipality by population is Colusa.
How many cities, towns, and villages are in Colusa County? ▾
Colusa County encompasses 5 incorporated municipal entities, including 5 cities, 0 towns, and 0 villages.
What is the total population and land area of Colusa County? ▾
According to official U.S. Census Bureau data, Colusa County has a population of approximately 21,839 residents and spans an area of 1,151 square miles.
How many ZIP codes operate in Colusa County? ▾
There are 5 active USPS ZIP codes serving addresses within Colusa County, California.