| City | County | 2026 Pop. ↓ |
|---|---|---|
| Meridian | Ada County | 148,009 |
| Moscow | Latah County | 27,000 |
| Mountain Home | Elmore County | 16,961 |
| Middleton | Canyon County | 13,145 |
| McCall | Valley County | 4,233 |
| Mountain Home AFB | Elmore County | 3,189 |
| Montpelier | Bear Lake County | 2,717 |
| Malad City | Oneida County | 2,350 |
| Moreland | Bingham County | 1,411 |
| Moyie Springs | Boundary County | 1,411 |
| Marsing | Owyhee County | 1,234 |
| McCammon | Bannock County | 826 |
| Menan | Jefferson County | 724 |
| Mullan | Shoshone County | 669 |
| Melba | Canyon County | 643 |
| Mackay | Custer County | 489 |
| Mud Lake | Jefferson County | 374 |
| Murphy | Owyhee County | 231 |
| Midvale | Washington County | 219 |
| Malta | Cassia County | 183 |
| Moore | Butte County | 179 |
| Murtaugh | Twin Falls County | 125 |
| Minidoka | Minidoka County | 95 |