- Chalfant Valley
- Crestview
- Crowley Lake
- Camphora
- Carmel Highlands
- Carmel Valley Manor
- Castle Rock
- Coburn
- Confederate Corners
- Cooper
- Corral de Tierra
- Creekside
- Cypress Point Rock
- Chester
- Columbia
- Concord
- Cottonwood
- Carlsbad
- Cartago
- Ceres
- Cerritos
- Chino
- Clovis
- Colfax
- Cottonwood
- Covelo
- Coon Island
- Creston
- Cuttings Wharf
- Camp Spaulding