- Cahone
- Calhan
- Cameo
- Campo
- Canon City
- Capulin
- Carbondale
- Carr
- Cascade
- Castle Pines
- Castle Rock
- Cedaredge
- Centennial
- Center
- Central City
- Chama
- Cherry Creek
- Cherry Hills Village
- Cheyenne Wells
- Chromo
- Cimarron
- Clark
- Clifton
- Coal Creek
- Collbran
- Colorado City
- Colorado Springs
- Columbine Valley
- Commerce City
- Como
- Conejos
- Conifer
- Cope
- Copper Mountain
- Cortez
- Cory
- Cotopaxi
- Cowdrey
- Craig
- Crawford
- Creede
- Crested Butte
- Crestone
- Cripple Creek
- Crook
- Crowley