- Candor
- Caneadea
- Canfield Trailer Park
- Canisteo
- Canisteo Center
- Canoe Hill
- Canoe Islands
- Canoe Place
- Canoga
- Canoga Island
- Canoga Springs
- Canopus Island
- Canterbury Estates
- Canterbury Hill
- Canterbury Knolls
- Canton
- Cape Vincent
- Caprice Island
- Captree Island
- Cardiff
- Cards Corners
- Cardtown
- Carefree Park Estates Mobile Home Park
- Carey Corners
- Careys Corners
- Carl Island
- Carle Place
- Carleton Island
- Carley Mills
- Carlisle