- Matfield Junction
- Mathies Manor
- Mattapan
- Mattapoisett
- Mattapoisett Center
- Mattapoisett Ledge
- Maushop Village
- Maxim Corner
- Mayflower Grove
- Mayflower Heights
- Mayflower Ledge
- Maynard
- Mayo Beach
- Mayo Corners
- McKnight and Bay
- Meadow Brook
- Meadow Island
- Meadow Rock
- Meadow Wood Trailer Park
- Meadowbrook Acres Mobile Home Park
- Meadowbrook Green
- Meadowbrook Mobile Home Park
- Meadowvale
- Meads Corner
- Mechanicsville
- Medfield
- Medfield Junction
- Medford
- Medford Hillside
- Medway