- Cascade-Chipita Park
- Castiel
- Castle Oaks
- Castle Pines
- Castle Pines North
- Castle Pines Village
- Castle Rock
- Castlewood
- Castlewood North
- Cathedral
- Catherine
- Cattle Creek
- Cedar Cove
- Cedar Creek
- Cedar Crest
- Cedar Grove
- Cedar Point
- Cedaredge
- Cedarwood
- Centennial
- Center
- Centerville
- Central City
- Centro
- Chacra
- Chama
- Chama
- Chance
- Channing
- Cheraw