| Post Office Name | City/State | Address | Phone Number | Action |
|---|---|---|---|---|
| Big Bar Post Office | Big Bar, CA 96010 | 27761 State Highway 299 | 5306236697 | View Details Get Directions |
| Burnt Ranch Post Office | Burnt Ranch, CA 95527 | 10271c Highway 299 | 5306292847 | View Details Get Directions |
| Douglas City Post Office | Douglas City, CA 96024 | 140 Steiner Flat Rd | 5306235149 | View Details Get Directions |
| Hayfork Post Office | Hayfork, CA 96041 | 7180 State Highway 3 | 5306285515 | View Details Get Directions |
| Hyampom Post Office | Hyampom, CA 96046 | 22617 Hyampom Rd | 5306285955 | View Details Get Directions |
| Junction City Post Office | Junction City, CA 96048 | 43380a State Highway 299 | 5306235254 | View Details Get Directions |
| Lewiston Post Office | Lewiston, CA 96052 | 4391a Trinity Dam Blvd | 5307783939 | View Details Get Directions |
| Mad River Post Office | Mad River, CA 95552 | 2515b State Highway 36 | 7075746511 | View Details Get Directions |
| Platina Post Office | Platina, CA 96076 | 4554 State Highway 36 W | 5303524555 | View Details Get Directions |
| Salyer Post Office | Salyer, CA 95563 | 1080 Highway 299 | 5306292380 | View Details Get Directions |
| Trinity Center Post Office | Trinity Center, CA 96091 | 271 Mary Ave | 5302663455 | View Details Get Directions |
| Weaverville Post Office | Weaverville, CA 96093 | 50 S Miner St | 5306236144 | View Details Get Directions |
| Zenia Post Office | Zenia, CA 95595 | 26531 Ruth Zenia Rd | 7079239687 | View Details Get Directions |
| Mailbox in Post Office Lobby | Burnt Ranch, CA 95527 | 1 State Highway 299 W | -- | Get Directions |
| Mailbox in Post Office Lobby | Platina, CA 96076 | 4554 Highway 36 W | -- | Get Directions |
| Public Collection Box | Weaverville, CA 96093 | 0000 Hwy 3 | -- | Get Directions |
| Public Collection Box | Trinity Center, CA 96091 | 10 Mann Rd | -- | Get Directions |
| Public Collection Box | Weaverville, CA 96093 | 1301 Main St | -- | Get Directions |
| Public Collection Box | Zenia, CA 95595 | 26530 Ruth-Zenia Rd | -- | Get Directions |
| Public Collection Box | Douglas City, CA 96024 | 3333 Steiner Flat Rd | -- | Get Directions |
