| Mount Zion Township, IL (Township) |
| Mountain, ND (City) |
| Mountain Brook, AL (City) |
| Mountain City, GA (Town) |
| Mountain City, TX (City) |
| Mountain City, TN (Town) |
| Mountain Grove, MO (City) |
| Mountain Home, AR (City) |
| Mountain Home, ID (City) |
| Mountain Iron, MN (City) |
| Mountain Lake, MN (City) |
| Mountain Lake, MN (Township) |
| Mountain Lake Park, MD (Town) |
| Mountain Lakes, NJ (Borough) |
| Mountain Park, OK (Town) |
