- Calhan
- Campion
- Cañon City
- Carriage Club
- Castle Pines
- Castle Rock
- Cedaredge
- Centennial
- Cherry Hills Village
- Cheyenne Wells
- Cimarron Hills
- Coal Creek
- Cokedale
- Collbran
- Colorado Springs
- Cabin Creek
- Caddoa
- Cahone
- Calhoun
- Camden
- Cameo
- Camp Bird
- Canfield
- Cañon
- Cañon City
- Canton
- Capulin
- Carbon Junction
- Carbonera
- Cardiff