Zip Code | City | Population |
|---|---|---|
| 95926 | Chico | 42,362 |
| 95928 | Chico | 38,412 |
| 95973 | Chico | 38,323 |
| 95966 | Oroville | 30,108 |
| 95965 | Oroville | 20,835 |
| 95948 | Gridley | 11,456 |
| 95954 | Magalia | 10,163 |
| 95969 | Paradise | 7,564 |
| 95938 | Durham | 4,451 |
| 95917 | Biggs | 4,091 |
| 95942 | Forest Ranch | 1,786 |
| 95968 | Palermo | 1,366 |
| 95916 | Berry Creek | 965 |
| 95914 | Bangor | 450 |
| 95930 | Clipper Mills | 417 |
| 95941 | Forbestown | 396 |
| 95978 | Stirling City | 98 |
| 95974 | Richvale | 65 |
| 95958 | Nelson | 0 |
| 95929 | Chico | 0 |