- Cascadia
- Castle Rock
- Castle Rock
- Cat and Kittens Rock
- Cave Junction
- Cave Rock
- Cayuse
- Cecil
- Cedar Flat
- Cedar Hills
- Cedar Island
- Cedar Mill
- Cedar Point
- Cedardale
- Cedarhurst Park
- Celilo Village
- Centennial
- Centennial Island
- Central Point
- Champoeg
- Chapman
- Chapman Corner
- Chapman Landing
- Charbonneau
- Charleston
- Charlestown
- Chatham Island
- Chehalem
- Chemawa
- Chemult