| City | County | 2026 Pop. ↓ |
|---|---|---|
| Rock Springs | Sweetwater County | 22,817 |
| Riverton | Fremont County | 10,978 |
| Rawlins | Carbon County | 7,637 |
| Ranchettes | Laramie County | 6,525 |
| Rafter J Ranch | Teton County | 1,231 |
| Ranchester | Sheridan County | 1,196 |
| Red Butte | Natrona County | 880 |
| Rolling Hills | Converse County | 427 |
| Reliance | Sweetwater County | 328 |
| Rock River | Albany County | 218 |
| Robertson | Uinta County | 96 |
| Ralston | Park County | 93 |
| Riverside | Carbon County | 65 |
| Ryan Park | Carbon County | 36 |