| Locality | Post Code |
|---|---|
| Black Rock, Summit | 84036 |
| Coalville, Summit | 84017 |
| Deer Mountain, Summit | 84036 |
| Deer Valley, Summit | 84060 |
| Echo, Summit | 84024 |
| Emory, Summit | 84024 |
| Francis, Summit | 84036 |
| Heber, Summit | 84036 |
| Henefer, Summit | 84033 |
| Hoytsville, Summit | 84017 |
| Kamas, Summit | 84036 |
| Kimball Junction, Summit | 84098 |
| Marion, Summit | 84036 |
| Mayflower Mnt, Summit | 84060 |
| Oakley, Summit | 84055 |
| Park City, Summit | 84060, 84098 |
| Peoa, Summit | 84061 |
| Pine Cliff, Summit | 84017 |
| Rockport, Summit | 84061 |
| Snyderville, Summit | 84098 |
| Summit Park, Summit | 84098 |
| Tuhaye, Summit | 84036 |
| Upton, Summit | 84017 |
| Wanship, Summit | 84017 |
| Woodland, Summit | 84036 |