Cities in United States ( 10,163 )
- Clay Center, Kansas
- Claymont
- Clayton, Alabama
- Clayton, California
- Clayton, Delaware
- Clayton, Missouri
- Clayton, New Jersey
- Clayton, New Mexico
- Clayton, North Carolina
- Clayton, Ohio
- Clear Lake, Iowa
- Clearbrook Park
- Clearfield, Pennsylvania
- Clearfield, Utah
- Clearlake, California
- Clearview, Washington
- Clearwater, Florida
- Clearwater, South Carolina
- Cleburne, Texas
- Clementon
- Clemmons
- Clemson, South Carolina
- Clermont, Florida
- Cleveland, Florida
- Cleveland, Georgia
- Cleveland Heights
- Cleveland, Mississippi
- Cleveland, Ohio
- Cleveland, Oklahoma
- Cleveland, Tennessee
- Cleveland, Texas
- Cleveland, Texas
- Cleves, Ohio
- Clewiston
- Cliffside Park
- Cliffwood Beach