20 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 95926 | Chico | 42,143 |
| 95973 | Chico | 37,977 |
| 95928 | Chico | 37,533 |
| 95966 | Oroville | 29,335 |
| 95965 | Oroville | 20,854 |
| 95948 | Gridley | 11,118 |
| 95954 | Magalia | 8,488 |
| 95969 | Paradise | 7,804 |
| 95938 | Durham | 4,327 |
| 95917 | Biggs | 3,561 |
| 95942 | Forest Ranch | 2,190 |
| 95968 | Palermo | 1,346 |
| 95916 | Berry Creek | 765 |
| 95914 | Bangor | 459 |
| 95930 | Clipper Mills | 412 |
| 95941 | Forbestown | 342 |
| 95978 | Stirling City | 283 |
| 95974 | Richvale | 93 |
| 95958 | Nelson | 0 |
| 95929 | Chico | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 20 ZCTAs in Butte County, California (US Census).