- Clearwater
- Cleveland
- Coles Valley
- Comstock
- Cow Creek
- Chiloquin
- Clem
- Cabell City
- Courtrock
- Clackamas
- Cole Island
- Clatskanie
- Cascade Gorge
- Climax
- Colestin
- Copper
- Coburg
- Crooked River Ranch
- California Bar
- Carpenters Island
- Columbia City
- Condon
- Coos Bay
- Coquille
- Cornelius
- Corvallis
- Cottage Grove
- Canary
- Cedar Flat
- Cloverdale