20 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 95926 | Chico | 40,567 |
| 95973 | Chico | 39,031 |
| 95928 | Chico | 37,409 |
| 95966 | Oroville | 28,503 |
| 95965 | Oroville | 21,181 |
| 95948 | Gridley | 11,200 |
| 95969 | Paradise | 8,339 |
| 95954 | Magalia | 8,165 |
| 95938 | Durham | 3,943 |
| 95917 | Biggs | 3,752 |
| 95942 | Forest Ranch | 2,089 |
| 95968 | Palermo | 1,364 |
| 95916 | Berry Creek | 667 |
| 95930 | Clipper Mills | 463 |
| 95914 | Bangor | 409 |
| 95978 | Stirling City | 142 |
| 95941 | Forbestown | 106 |
| 95974 | Richvale | 98 |
| 95958 | Nelson | 0 |
| 95929 | Chico | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 20 ZCTAs in Butte County, California (US Census).