| City | County | 2026 Pop. ↓ |
|---|---|---|
| Millcreek | Salt Lake County | 64,057 |
| Murray | Salt Lake County | 53,982 |
| Magna | Salt Lake County | 36,596 |
| Midvale | Salt Lake County | 36,128 |
| Mapleton | Utah County | 17,095 |
| Midway | Wasatch County | 6,014 |
| Moab | Grand County | 5,163 |
| Maeser | Uintah County | 4,748 |
| Morgan | Morgan County | 4,679 |
| Mount Pleasant | Sanpete County | 4,092 |
| Mountain Green | Morgan County | 4,069 |
| Manti | Sanpete County | 3,865 |
| Monroe | Sevier County | 2,787 |
| Millville | Cache County | 2,545 |
| Marriott-Slaterville | Weber County | 2,310 |
| Mona | Juab County | 2,012 |
| Moroni | Sanpete County | 1,743 |
| Monticello | San Juan County | 1,715 |
| Mantua | Box Elder County | 1,449 |
| Milford | Beaver County | 1,400 |
| Mendon | Cache County | 1,324 |
| Minersville | Beaver County | 881 |
| Marion | Summit County | 696 |
| Mayfield | Sanpete County | 627 |
| Myton | Duchesne County | 590 |
| Marysvale | Piute County | 513 |
| Meadow | Millard County | 368 |
| Manila | Daggett County | 318 |
| Montezuma Creek | San Juan County | 238 |
| Mexican Hat | San Juan County | 22 |