- Maryland Beach
- Maryland City
- Maryland Gardens
- Maryland Line
- Maryland Manor
- Maryland Mobile Estates
- Maryland Park
- Maryland Point
- Maryland Ponderosa
- Marymount
- Marys Choice
- Maryvale
- Marywood
- Mason Dixon Estates
- Mason Dixon Village
- Mason Island
- Mason Island
- Mason Landing
- Masons
- Masons Beach
- Masonville
- Massey
- Matapeake
- Matapeake
- Matapeake Estates
- Matherwood Heights
- Mathews
- Matovich
- Mattapex
- Mattawoman