13 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 96093 | Weaverville | 4,320 |
| 96041 | Hayfork | 2,889 |
| 96052 | Lewiston | 2,366 |
| 96048 | Junction City | 1,297 |
| 96024 | Douglas City | 1,082 |
| 96091 | Trinity Center | 932 |
| 95527 | Burnt Ranch | 622 |
| 95552 | Mad River | 586 |
| 95563 | Salyer | 577 |
| 96046 | Hyampom | 489 |
| 96010 | Big Bar | 212 |
| 96076 | Platina | 148 |
| 95595 | Zenia | 133 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 13 ZCTAs in Trinity County, California (US Census).