- Canby
- Church
- Clarkdale
- Coal City
- Coal Valley
- Country Aire Mobile Home Park
- Cheney
- Country Aire Home Park
- Calamus
- Callender
- Camanche
- Canfield
- Castle Hill
- Cedar City
- Cedar Falls Junction
- Cedar Falls Mobile Home Park
- Cedar Falls Mobile Home Village
- Cedar Knoll Park
- Cantril
- Carter Lake
- Castana
- Cedar Falls
- Cedar Rapids
- Center Junction
- Chariton
- Charles City
- Cherokee
- Casino Beach
- Coster
- Churdan