- Chinatown
- Cherry Ridge Ranch
- Cow Island
- Canton
- Copper City
- Chance
- Coal Banks Landing
- Council Island
- Crow Coulee Bar
- Camp Three
- Calvert
- Cascade Colony
- Castner Falls
- Centerville
- Cooper
- Countryside Village
- Carbon Hill Trailer Court
- Cope Trailer Park
- Charlo
- Carbert
- Casitas Del Rio East Mobile Home Park
- Colgate
- Curry
- Choteau
- Circle
- Clancy
- Cabin Creek
- Cottonwood
- Canyon Creek Boat Landing
- Clayton Island