Founded in 1891, Glenn County is one of 58 counties in the state of California. Historically, Glenn County was formed from Colusa. The city of Willows is the county seat. With FIPS code of 21, Glenn County has a population of 28,805 and area of 1,315 square miles (3,406 km2).
List of all cities in Glenn County, CA alphabetically
| City/Town | Postal Code | Area Code |
| Afton, CA | 95920 | 530 |
| Artois, CA | 95913 | 530 |
| Bayliss, CA | 95943 | 530 |
| Butte City, CA | 95920 | 530 |
| Elk Creek, CA | 95939 | 530 |
| Fruto, CA | 95988 | 530 |
| Glenn, CA | 95943 | 530 |
| Grindstone Creek Rancheria, CA | 95939 | 530 |
| Hamilton City, CA | 95951 | 530 |
| Mills Orchard, CA | 95951 | 530 |
| Newville, CA | 95963 | 530 |
| Ordbend, CA | 95943 | 530 |
| Orland, CA | 95963 | 530 |
| Willows, CA | 95988 | 530 |
Map of Cities in Glenn County, CA
