9 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Gillette | Campbell County | 34,022 |
| Green River | Sweetwater County | 11,307 |
| Glenrock | Converse County | 2,408 |
| Greybull | Big Horn County | 1,750 |
| Grover | Lincoln County | 1,253 |
| Guernsey | Platte County | 1,077 |
| Glendo | Platte County | 238 |
| Garland | Big Horn County | 140 |
| Granger | Sweetwater County | 97 |