13 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Mills | Natrona County | 4,711 |
| Mountain View | Uinta County | 1,279 |
| Moorcroft | Crook County | 1,036 |
| Moose Wilson Road | Teton County | 974 |
| Marbleton | Sublette County | 863 |
| Meeteetse | Park County | 315 |
| Midwest | Natrona County | 284 |
| Medicine Bow | Carbon County | 236 |
| McKinnon | Sweetwater County | 95 |
| Manderson | Big Horn County | 92 |
| Manville | Niobrara County | 91 |
| Meadow Acres | Converse County | 84 |
| Mammoth | Park County | 20 |