13 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 96093 | Weaverville | 3,626 |
| 96041 | Hayfork | 3,413 |
| 96052 | Lewiston | 2,817 |
| 96048 | Junction City | 1,197 |
| 96024 | Douglas City | 1,029 |
| 96091 | Trinity Center | 761 |
| 95527 | Burnt Ranch | 708 |
| 95563 | Salyer | 584 |
| 95552 | Mad River | 433 |
| 96046 | Hyampom | 410 |
| 95595 | Zenia | 307 |
| 96076 | Platina | 140 |
| 96010 | Big Bar | 119 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 13 ZCTAs in Trinity County, California (US Census).