- Cumberland
- Chrisman
- Christopher
- Cisne
- Cissna Park
- Clarendon Hills
- Camp Travis
- Cruse
- Campbell
- Cooks Mills
- Country Club Estates
- Coal Valley
- Coatsburg
- Cobden
- C H Taylor's Sanwaldrun Estates
- Cache Lake
- Calumet
- Calumet
- Capri Village
- Carlye Subdivision
- Cedarbrook Court
- Chapel Hill Estates
- Charlemagne
- Charlemagne East
- Charring Cross
- Cícero
- Citation Lake
- Clarke's Subdivision
- Cobblewood
- Colonial Village