- Clifton, Virginia
- Clovin, New Mexico
- Cochran, Georgia
- Cocoa Beach, Florida
- Cody, Wyoming
- Coeur d'Alene, Idaho
- Colchester, Vermont
- Colcord, Oklahoma
- College Grove, Tennessee
- College Park, Georgia
- College Park, Maryland
- College Park, Pennsylvania
- College Station, Texas
- Colleyville, Texas
- Collierville, Tennessee
- Colorado City, Texas
- Columbia, Maryland
- Columbia, Missouri
- Columbia, South Carolina
- Columbia, Tennessee
- Columbus, Georgia
- Columbus, Indiana
- Columbus, Nebraska
- Columbus, Ohio
- Commack, New York
- Commerce, Texas
- Concord, California
- Concord, New Hampshire
- Concord, North Carolina
- Condon, Montana
- Conner, Montana
- Conroe, Texas
- Converse, Indiana
- Conway, Arkansas
- Conway, South Carolina
- Cookeville, Tennessee
- Coon Rapids, Minnesota
- Cooper City, Florida
- Coppell, Texas
- Copperhill, Tennessee
