- Monida
- Monroe Island
- Montague
- Montana City
- Montaqua
- Moore
- Moorhead
- Moose Town
- Morel
- Morgan
- Mosby
- Moss Agate
- Mossmain
- Moulton
- Mount Jumbo Trailer Court
- Mountain Acres Mobile Home Park
- Mountain Shadows Estates
- Mountain Valley Trailer Court
- Mountain View
- Mountain View Court
- Mountain View Mobile Home Park
- Mountain View Mobile Home Park
- Mountain View Trailer Court
- Mountain View Trailer Court
- Mountain View Trailer Court
- Moyne
- Muddy
- Muir
- Murphys Trailer Court
- Murray Island (historical)