- Mount Bowdoin
- Mount Hope
- Mount Ida
- Mantyranta
- Maplewood
- Marions Camp
- Marks Garrison
- Massasoit
- Meadow Wood Trailer Park
- Meadowbrook Acres Mobile Home Park
- Merino Village
- Mill Street
- Mill Village
- Millbury Junction
- Millerville
- Ministers Island
- Moores Corners
- Morningdale
- Morseville
- Muschopauge
- Mystic Grove
- Mansfield
- Marion
- Milford
- Millville
- Montague
- Montgomery
- Medford
- Melrose
- Middlefield