| Mount Olive Township, NJ (Township) |
| Mount Oliver, PA (Borough) |
| Mount Olivet, KY (City) |
| Mount Orab, OH (Village) |
| Mount Penn, PA (Borough) |
| Mount Pleasant, PA (Borough) |
| Mount Pleasant, SD (Township) |
| Mount Pleasant, MI (City) |
| Mount Pleasant, OH (Village) |
| Mount Pleasant, TX (City) |
| Mount Pleasant, UT (City) |
| Mount Pleasant, AR (Town) |
| Mount Pleasant, SC (Town) |
| Mount Pleasant, TN (City) |
| Mount Pleasant, MO (Township) |
