Production place
- Calcutta mint (historic place), Kolcata, India1
- Cales (ancient name) Campania, Italy1
- Cales (ancient place)1
- California21
- Camp Creek, Humboldt County, California1
- Camp Richardson, El Dorado County, California3
- Campeche (city), Campeche, Mexico1
- Campo (CDP), San Diego County, California1
- Canada1
- Cappadocia1
- Carabaca, Hispania1
- Caria, Anatolia, Turkey1
- Carneros Rocks, Kern County, California7
- Carrhae (ancient place)2
- Carson City County, Nevada2
- Carson City mint, Carson City, Carson City County3
- Carson City, Carson City County, Nevada11
- Carson Valley, Carson City County, Nevada1
- Carteia (ancient city), Bay of Gibraltar, Spain5
- Carthage, Tunisia5