- Campo Seco
- Camptonville
- Camulos
- Can Rock
- Cana
- Canby
- Canby Cross
- Canebrake
- Cannibal Island
- Cannon
- Canoga Park
- Cantil
- Cantrall Mill
- Canyon
- Canyon City
- Canyon Country
- Canyon View
- Cap Rock
- Capay
- Capay
- Cape Horn
- Cape Horn
- Cape Horn
- Capetown
- Capistrano Beach
- Capital Hill
- Capitan
- Caravan Mobile Home Park
- Carbona
- Carbondale