- Mountain Gate
- Mountain Gate Mobile Home Park
- Magalia
- Malibu
- Malibu Beach
- Mammoth Lakes
- Manhattan Beach
- Manteca
- Manton
- Maredith Mill
- Minnesota Flat
- Morristown
- Mount Pleasant
- Maricopa
- Marina del Rey
- Mott
- Mugginsville
- Mariposa
- Markleeville
- Maine Prairie
- Mankas Corner
- Mare Island
- Meins Landing
- Middle Ground Island
- Molena
- Montezuma
- Morrow Island
- Mayflower Village
- Maywood
- McArthur