Place
- Colorado--Rio Blanco County1
- Colorado--Rio Grande County1
- Colorado--Saguache County1
- Colorado--Sedgwick County1
- Colorado--Washington County1
- Colorado--Weld County1
- Colorado--Yuma County1
- Congo1
- Connecticut--Woodstock1
- Connecticut; New York--New York1
- Copenhagen1
- Cornish Township1
- Corsica1
- County Cork1
- Craters of the Moon National Monument1
- Crimea1
- Crooks Township1
- Crow Wing County, Minnesota1
- Crystal, Minnesota1
- Czech Republic--Prague1