United States of America populated cities
- Commerce Charter Township
- Commerce City
- Commercial Point
- Comstock Park
- Concord
- Conway Springs
- Cooke City
- Cooper Landing
- Copper Center
- Copper Harbor
- Copperhill
- Cornwall-on-Hudson
- Corona
- Corpus Christi, Texas
- Costa Mesa
- Cotton Plant
- Cottonwood Falls
- Coulee City
- Council Bluffs, Iowa
- Council Grove
- Covington, Kentucky
- Cranberry Isles
- Crescent Mills
- Crest Hill
- Cross Anchor
- Cross City
- Croton-on-Hudson
- Crow Agency
- Crowheart, Wyoming
- Crown King
- Crows Landing
- Cuba City
- Cullen
- Cullom, Illinois
- Culver City, California
- Cumberland Center
- Cupertino, California
- Cuyahoga Falls, Ohio
- Dallas
- Daly City
- Dana Point
- Danbury
- Davenport
- Davenport Center
- Davey
- David City
- Davis Junction
- Dawson Springs
- Dayton, Ohio
- Daytona Beach, Florida