- Cabell City
- Cairo
- Calapooia
- California Bar
- Calkins
- Callahan
- Camas Valley
- Camel Rock
- Camp Elkanah
- Camp Sherman
- Canaan
- Canary
- Canby
- Canemah
- Cannery Island
- Cannon Beach
- Canyon City
- Canyonville
- Cape Meares
- Capitol Hill
- Carlton
- Carnahan
- Carnation
- Carpenters Island
- Carpenterville
- Carson
- Carus
- Carver
- Cascade Gorge
- Cascade Locks