23 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Meridian | Ada County | 145,039 |
| Moscow | Latah County | 26,968 |
| Mountain Home | Elmore County | 17,139 |
| Middleton | Canyon County | 11,987 |
| McCall | Valley County | 4,296 |
| Mountain Home AFB | Elmore County | 3,170 |
| Montpelier | Bear Lake County | 2,767 |
| Malad City | Oneida County | 2,377 |
| Moreland | Bingham County | 1,359 |
| Marsing | Owyhee County | 1,273 |
| Moyie Springs | Boundary County | 1,245 |
| McCammon | Bannock County | 808 |
| Menan | Jefferson County | 746 |
| Mullan | Shoshone County | 697 |
| Melba | Canyon County | 598 |
| Mackay | Custer County | 504 |
| Mud Lake | Jefferson County | 374 |
| Midvale | Washington County | 229 |
| Murphy | Owyhee County | 215 |
| Moore | Butte County | 184 |
| Malta | Cassia County | 182 |
| Murtaugh | Twin Falls County | 124 |
| Minidoka | Minidoka County | 90 |