- Ma and Pas Mobile Home Park
- McGowan
- Middle Nemah
- Moores Corner
- Magnolia Heights
- Majestic Mobile Manor
- Manitou
- Maplewood
- McChord Air Force Base
- McKenna Heights Mobile Home Park
- McMillan Village Mobile Home Park
- McNeil Island
- Meadowbrook Mobile Home Park
- Meeker
- Meridian
- Meridian Terrace Mobile Manor
- Mill Village Mobile Home Park
- Miller's Villa Mobile Home Park
- Minter
- Mock City
- Monta Vista
- Mountain Valley Mobile Home Park
- Mountain View Estates Mobile Home Park
- Mountplains Rainier Mobile Home Park
- Malden
- Marietta
- Markham
- Marlin
- Medina
- Mesa