County Postal Hub • FIPS 06021
Glenn County, CA ZIP Codes & Directory
Complete postal guide for Glenn County, California. Featuring the official county seat of Willows, largest municipality Orland, and serving 5 incorporated municipal entities.
County Seat Willows
Total Population 28,917
Land Area 1,314 sq mi
FIPS Code 06021
Municipalities Located in Glenn County
Incorporated Cities, Towns, and Villages
5 Cities
0 Towns
Active USPS ZIP Codes in Glenn County
Standard delivery zones and geographic service boundaries
Frequently Asked Questions About Glenn County, CA
What is the county seat and largest city in Glenn County? ▾
The official county seat of Glenn County is Willows, and its largest incorporated municipality by population is Orland.
How many cities, towns, and villages are in Glenn County? ▾
Glenn County encompasses 5 incorporated municipal entities, including 5 cities, 0 towns, and 0 villages.
What is the total population and land area of Glenn County? ▾
According to official U.S. Census Bureau data, Glenn County has a population of approximately 28,917 residents and spans an area of 1,314 square miles.
How many ZIP codes operate in Glenn County? ▾
There are 5 active USPS ZIP codes serving addresses within Glenn County, California.