Barrios de California M
- Mabury Park
- MacArthur Park
- Macero Del Norte
- Madison Heights
- Madrona
- Magliocco-Huff
- Magnolia Center
- Magnolia Park
- Malibu Meadows
- Mansion Flats
- Mar Vista
- Mar Vista Oxnard
- Mar-Les
- Marble Estates
- Marceline
- Margarita Village-Temeku Hills
- Marina
- Marina Bay
- Marina District
- Marina Lagoon
- Marina Pacifica
- Mariposa
- Maroa
- Masterpiece Estates
- May Valley
- Mayfair
- Mayfield
- McClellan
- McKay-Ringwood
- McLane
- McLaughlin
- McManus
- McNeil
- Meadow Homes
- Meadow View
- Meadowview
- Media Center
- Melrose
- Memorial Hospital
- Menlo Oaks
- Merced Manor-Parkmerced
- Meredith Parkwood
- Metro Center
- Mid-City
- Mid-City Santa Monica
- Middle East Oakland
- Midtown Milpitas
- Midtown Palo Alto
- Midtown Sacramento
- Midtown San Diego
- Midway
- Midway District
- Millic-Phelps
- Mira Costa
- Mira Mesa
- Miracle Mile
- Miramar
- Mission
- Mission Bay
- Mission Beach
- Mission Dolores
- Mission Grove
- Mission Hills
- Mission Terrace
- Mission Valley
- Mission-Foothill
- Mission-Garin
- Mobile Town
- Molino-Edgewood
- Montecito Heights
- Monterey Hills
- Monterey Vista
- Moorpark-Glendale
- Morena
- Moreno Valley East
- Moreno Valley West
- Morgan Creek Village
- Morning Star
- Morningside Park
- Morro Bay/Cayucos/Cambria
- Mosswood
- Mount Washington
- Mountain View
- Mountain View
- Mt Diablo
- Mt Eden
- Mt Hope
- Muir
- Mulford Gardens