| Copley Township, IL (Township) |
| Copley Township, OH (Township) |
| Coplin, ME (Plantation) |
| Coppell, TX (City) |
| Copper Canyon, TX (Town) |
| Copper City Village, MI (Village) |
| Copper Creek Community Development District, FL (CDD) |
| Copper Oaks Community Development District, FL (CDD) |
| Copperas Cove, TX (City) |
| Copperhead Community Development District, FL (CDD) |
| Copperhill, TN (City) |
| Copperstone Community Development District, FL (CDD) |
| Copperton, UT (Township) |
| Coppock, IA (City) |
| Coquille, OR (City) |
