9 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Gillette | Campbell County | 33,506 |
| Green River | Sweetwater County | 11,289 |
| Glenrock | Converse County | 2,422 |
| Greybull | Big Horn County | 1,753 |
| Grover | Lincoln County | 1,562 |
| Guernsey | Platte County | 1,088 |
| Glendo | Platte County | 238 |
| Garland | Big Horn County | 206 |
| Granger | Sweetwater County | 91 |