- Macon
- Maddux
- Madoc
- Maiden
- Maiden Rock
- Malmstrom AFB
- Malmstrom Air Force Base
- Malone
- Malta
- Mammoth
- Manchester
- Manger
- Manhattan
- Mann
- Mannix
- Manson
- Mar-Le Villa
- Marion
- Marsh
- Martin City
- Martinsdale
- Martinsdale Colony
- Mary B Island
- Marys Island
- Marysville
- Matthews
- Maudlow
- Maus Trailer Court
- Maxville
- McAllister