California Neighborhoods O
- Oak Creek (34)
- Oak Grove (5)
- Oak Knoll Golf Links (2)
- Oak Knoll-Redwood Park (11)
- Oak Park (11)
- Oak Park (2)
- Oak Springs (3)
- Oak Valley Greens (2)
- Oak View (10)
- Oakmont (1)
- Oakmont Village (5)
- Oakridge (1)
- Ocean Beach (38)
- Ocean Crest (13)
- Ocean Hills (10)
- Ocean Park (73)
- Oceana (5)
- Oceanview (4)
- Ohlone (2)
- Oildale (7)
- Old Agoura (1)
- Old Davis North (1)
- Old East Davis (3)
- Old Lakewood City (1)
- Old Las Palmas (3)
- Old Los Altos (3)
- Old Monterey (1)
- Old North Sacramento (6)
- Old Oakland (5)
- Old Palo Alto (2)
- Old Sacramento (5)
- Old San Leandro (15)
- Old Town (10)
- Old Town (4)
- Old Towne Orange (1)
- Olde Torrance Neighborhood (17)
- Oleander/Sunset (29)
- Olinder (1)
- Olive Drive (2)
- Olive Drive Area (3)
- Olive Heights (6)
- Olivenhain (1)
- Olympia (3)
- Olympus Pointe (3)
- One Ford Road (3)
- Orange Park (1)
- Orangecrest (9)
- Orchard Hills (33)
- Orchard Park (3)
- Ord Grove (1)
- Orinda Oaks (1)
- Ortega Park (4)
- Oster (1)
- Otay Mesa (16)
- Otay Mesa West (8)
- Otay Ranch (67)
- Otay Ranch Village (22)
- Otay Town (6)
- Outer Arden-Arcade (125)
- Outer Campbell/Los Gatos (32)
- Outer Carmichael/Citrus Heights (68)
- Outer Ceres/Keyes (5)
- Outer Danville/San Ramon (66)
- Outer Davis (36)
- Outer East Bakersfield (28)
- Outer Elk Grove (52)
- Outer Folsom/Orangevale/Fair Oaks (28)
- Outer Lakeview (6)
- Outer Lompoc/Santa Ynez (4)
- Outer Mill Vly/Corte Madera/Sausalito (29)
- Outer Milpitas/Berryessa (23)
- Outer Mission (5)
- Outer Monterey (14)
- Outer Mountain View/Los Altos (76)
- Outer N Sac/Natomas/N Highlands (17)
- Outer Napa (12)
- Outer North San Jose (15)
- Outer NW Bakersfield (32)
- Outer Oxnard (8)
- Outer Rancho Cordova (53)
- Outer Richmond/Martinez (30)
- Outer Roseville/Rocklin (27)
- Outer San Jacinto (92)
- Outer San Rafael/Larkspur (12)
- Outer Santa Clara (148)
- Outer Santa Maria (4)
- Outer Santa Rosa (109)
- Outer Seaport (1)
- Outer Sunnyvale (17)
- Outer Sunset (11)
- Outer Thousand Oaks (116)
- Outer Walnut Creek (27)
- Outlying Palm Springs (242)
- Oxnard Dunes (2)
- Oxnard Shores (19)