| Locality | Post Code |
|---|---|
| Altamont, Duchesne | 84001 |
| Altonah, Duchesne | 84002 |
| Arcadia, Duchesne | 84021 |
| Ballard, Duchesne | 84066 |
| Bluebell, Duchesne | 84007 |
| Boneta, Duchesne | 84001 |
| Bridgeland, Duchesne | 84021 |
| Defas Park, Duchesne | 84031 |
| Duchesne, Duchesne | 84021 |
| Fruitland, Duchesne | 84027 |
| Hanna, Duchesne | 84031 |
| Ioka, Duchesne | 84066 |
| Leeton, Duchesne | 84066 |
| Monarch, Duchesne | 84066 |
| Mountain Home, Duchesne | 84051 |
| Myton, Duchesne | 84052 |
| Neola, Duchesne | 84053 |
| Roosevelt, Duchesne | 84066 |
| Tabiona, Duchesne | 84072 |
| Talmage, Duchesne | 84073 |
| Upalco, Duchesne | 84007 |