Colorado
- Cahone
- Calhan
- Campo
- Canon City
- Capulin
- Carbondale
- Carr
- Cascade
- Castle Rock
- Cedaredge
- Center
- Central City
- Chama
- Cheraw
- Cheyenne Wells
- Chimney Rock
- Chromo
- Cimarron
- Clark
- Clifton
- Climax
- Coal Creek
- Coaldale
- Coalmont
- Collbran
- Colorado City
- Colorado Springs
- Commerce City
- Como
- Conejos
- Conifer
- Cope
- Cortez
- Cory
- Cotopaxi
- Cowdrey
- Craig
- Crawford
- Creede
- Crested Butte
- Crestone
- Cripple Creek
- Crook
- Crowley