| Locality | Post Code |
|---|---|
| Almanor, Plumas | 95947 |
| Beckwourth, Plumas | 96129 |
| Belden, Plumas | 95915 |
| Blairsden, Plumas | 96103 |
| Blairsden-Graeagle, Plumas | 96103 |
| Bucks Lake, Plumas | 95971 |
| Canyon Dam, Plumas | 95923 |
| Caribou, Plumas | 95915 |
| Chester, Plumas | 96020 |
| Chilcoot, Plumas | 96105 |
| Clio, Plumas | 96106 |
| Crescent Mills, Plumas | 95934 |
| Cromberg, Plumas | 96103 |
| Delleker, Plumas | 96122 |
| East Quincy, Plumas | 95971 |
| Ganser Bar, Plumas | 95915 |
| Genesee, Plumas | 95983 |
| Graeagle, Plumas | 96103 |
| Greenville, Plumas | 95947 |
| Johnsville, Plumas | 96103 |
| Massack, Plumas | 95971 |
| Meadow Valley, Plumas | 95956 |
| Oroville, Plumas | 95915 |
| Portola, Plumas | 96122 |
| Prattville, Plumas | 95923 |
| Quincy, Plumas | 95971 |