7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 95963 | Orland | 16,485 |
| 95988 | Willows | 8,748 |
| 95951 | Hamilton City | 2,522 |
| 95943 | Glenn | 670 |
| 95939 | Elk Creek | 376 |
| 95913 | Artois | 313 |
| 95920 | Butte City | 164 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Glenn County, California (US Census).