Post Offices List in Glenn County, California:
| Artois Post Office | 357 Front St, Artois, CA 95913 |
| Butte City Post Office | 31 Kilarney St, Butte City, CA 95920 |
| Elk Creek Post Office | 160 Church St, Elk Creek, CA 95939 |
| Glenn Post Office | 1836 State Highway 45, Glenn, CA 95943 |
| Hamilton City Post Office | 201 Main St, Hamilton City, CA 95951 |
| Orland Post Office | 831 4th St, Orland, CA 95963 |
| Willows Post Office | 315 W Sycamore St, Willows, CA 95988 |