23 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Meridian | Ada County | 149,862 |
| Moscow | Latah County | 27,580 |
| Mountain Home | Elmore County | 17,331 |
| Middleton | Canyon County | 12,811 |
| McCall | Valley County | 4,297 |
| Mountain Home AFB | Elmore County | 3,189 |
| Montpelier | Bear Lake County | 2,724 |
| Malad City | Oneida County | 2,342 |
| Moyie Springs | Boundary County | 1,421 |
| Moreland | Bingham County | 1,411 |
| Marsing | Owyhee County | 1,252 |
| McCammon | Bannock County | 822 |
| Menan | Jefferson County | 743 |
| Mullan | Shoshone County | 689 |
| Melba | Canyon County | 652 |
| Mackay | Custer County | 499 |
| Mud Lake | Jefferson County | 379 |
| Murphy | Owyhee County | 231 |
| Midvale | Washington County | 230 |
| Malta | Cassia County | 184 |
| Moore | Butte County | 181 |
| Murtaugh | Twin Falls County | 127 |
| Minidoka | Minidoka County | 84 |