- Caddington
- Caister-on-Sea
- Caistor Saint Edmunds
- Cambridge
- Campsey Ash
- Canewdon
- Canvey Island
- Capel Saint Mary
- Carbrooke
- Carlton Colville
- Castle Acre
- Castle Camps
- Castle Hedingham
- Castle Rising
- Caston
- Catfield
- Catworth
- Cavendish
- Cavenham
- Cawston
- Caxton
- Chalgrave
- Chalkwell
- Chalton
- Chapel End
- Chappel
- Charsfield
- Chatley
- Chatteris
- Chattisham
