- Cronin
- Crystal Lake
- Coyote Corner
- Cedar Grove
- Central
- Clawson
- Concord
- City-by-the Sea
- Copano Village
- Council Island
- Cactus
- Caddo Mills
- Callisburg
- Calvert
- Camp Swift
- Camp Wood
- Crown
- Canadian
- Caney City
- Cantu Addition
- Canutillo
- Canyon
- Carls Corner
- Carmine
- Carrizo Hill
- Carrizo Springs
- Carrollton
- Cashion Community
- Castle Hills
- Cedar Hill