- Mechanicsville
- Melitota
- Midlothian
- Milford
- Millersville
- Monkton
- Monrovia
- Morganza
- Morgnec
- Mount Harmony
- Mount Savage
- Mount Victoria
- Mount Zion
- Mountain
- Maugansville
- Mays Chapel
- Middle River
- Milford Mill
- Millington
- Mitchellville
- Montgomery Village
- Morningside
- Mount Aetna
- Mount Lena
- Mount Rainier
- Mountain Lake Park
- Myersville