Barrios de California C
- Cabrillo
- Cajon
- Calabazas North
- Calavera Hills Village
- California Spirit
- Calwa
- Cambrian
- Cambrian Community
- Campus Commons
- Canal
- Canndu/Avalon Gardens
- Canoas Garden
- Canterbury Village
- Canyon Crest
- Capitol Park
- Carmel Mountain
- Carmel Valley
- Carmine-Parkmont
- Casa de Oro-Mount Helix
- Casa Grande
- Casanova Oak Knoll
- Castle
- Castle Park
- Castlemont
- Castlemont
- Castro
- Catalina Villas
- Cathedral Hill/Intermission
- Centerville
- Central
- Central Alameda
- Central Brisbane
- Central Davis
- Central Downtown
- Central Escondido
- Central Malibu
- Central Napa
- Central Newport Beach
- Central Oak Park
- Central Sacramento
- Central San Pedro
- Central Sunset
- Central Waterfront
- Century City
- Chaboya
- Chandler Park
- Channel Islands
- Charter Oak
- Chemurgic
- Cherokee Point
- Cherry Orchard
- Cherry-Guardino
- Cherryland
- Cheviot Hills
- Chinatown
- Chinatown
- Chinatown
- Chino Canyon
- Chollas Creek
- Chollas View
- Cirby Side
- Citrus Grove
- Citrus Heights
- City West
- Civic Center
- Civic Center
- Civic Center
- Civic Core
- Clairemont
- Claremont
- Clarkdale
- Cleveland Heights
- Cliff Haven
- Coastal San Pedro
- Colina Del Sol
- College East
- College Greens East
- College Terrace
- College West
- Colonial Heights
- Colonial Heights
- Columbia
- Community Center/Sunnyvale
- Cooley Ranch
- Coronado
- Corridor
- Cortez
- Cortez-Stege
- Cory
- Country Club
- Country Club Heights Lakeland
- Country Club/Pacific
- Country Lane
- Country Village
- Countrybrook Lagoon
- Covell Park
- Covina-Valley
- Cow Hollow
- Cox
- Creekside-Sacramento
- Crenshaw
- Crescent Park
- Cresthaven
- Crocker Amazon
- Crossroads
- Cuernavaca
- Culver Crest
- Culver-West
- Curtis
- Cypress
- Cypress Park