M
- Madera
- Malibu
- Mammoth Lakes
- Manchester
- Manhattan Beach
- Manteca
- Maricopa
- Marina
- Marina del Rey
- Mariposa
- Markleeville
- Martinez
- Marysville
- Maywood
- McClellan AFB
- McCloud
- McFarland
- McKinleyville
- McKittrick
- Meadow Valley
- Meadow Vista
- Mendocino
- Mendota
- Menifee
- Menlo Park
- Merced
- Mi-Wuk Village
- Middletown
- Midpines
- Mill Creek
- Mill Valley
- Millbrae
- Milpitas
- Mineral
- Miramonte
- Miranda
- Mission Viejo
- Modesto
- Mojave
- Mokelumne Hill
- Monrovia
- Montague
- Montara
- Montclair
- Monte Rio
- Monte Sereno
- Montebello
- Montecito
- Monterey
- Monterey Park
- Moorpark
- Moraga
- Moreno Valley
- Morgan Hill
- Morro Bay
- Moss Beach
- Mount Shasta
- Mountain Mesa
- Mountain View (multiple)
- Mt Baldy
- Murphys
- Murrieta
- Myers Flat
Read more about this topic: List Of Communities In California