- Cold Springs
- Cold Springs Junction
- Crockett
- Camp Elkanah
- Cochran Islands
- Cedar Island
- Celilo Village
- Cherry Heights
- Clarno
- Carnation
- Chehalem
- Cherry Grove
- Cove Orchard
- Camas Valley
- Camp Sherman
- Carpenterville
- Cascadia
- Cayuse
- Cecil
- Centennial
- Charleston
- Chemult
- Cheshire
- Christmas Valley
- City of the Dalles
- Colton
- Corbett
- Cornucopia
- Crabtree
- Crane