| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Fort Calhoun | city | Nebraska | United States | 41.46 | -96.03 | 1072 | |
| Fort Callville (historical) | city | Nevada | United States | 36.11 | -114.69 | 1079 | |
| Fort Camp (historical) | city | California | United States | 36.76 | -119.67 | 298 | |
| Fort Canby | city | Washington | United States | 46.28 | -124.05 | 3 | |
| Fort Caroline | city | Florida | United States | 30.39 | -81.50 | 45 | |
| Fort Carson | city | Colorado | United States | 38.74 | -104.79 | 5869 | |
| Fort Casey | city | Washington | United States | 48.16 | -122.68 | 13 | |
| Fort Caswell | city | North Carolina | United States | 33.89 | -78.02 | 0 | |
| Fort Centre | city | Florida | United States | 26.95 | -81.16 | 19 | |
| Fort Chadbourne | city | Texas | United States | 32.00 | -100.29 | 1978 | |
| Fort Chaffee | city | Arkansas | United States | 35.31 | -94.31 | 830 | |
| Fort Cheatham | city | Tennessee | United States | 35.01 | -85.28 | 958 | |
| Fort Chiswell | city | Virginia | United States | 36.95 | -80.94 | 2060 | |
| Fort Christanna | city | Virginia | United States | 36.71 | -77.87 | 200 | |
| Fort Christian | city | United States Virgin Islands | United States | 18.34 | -64.93 | 0 | |
| Fort Clark | city | North Dakota | United States | 47.24 | -101.25 | 1751 | |
| Fort Clark Road Colonia | city | Texas | United States | 29.20 | -99.82 | 898 | |
| Fort Clark Springs | city | Texas | United States | 29.31 | -100.42 | 1108 | |
| Fort Clinton | city | New York | United States | 41.32 | -73.99 | 131 | |
| Fort Cobb | city | Oklahoma | United States | 35.10 | -98.44 | 1230 | |
| Fort Coffee | city | Oklahoma | United States | 35.29 | -94.58 | 830 | |
| Fort Collins | city | Colorado | United States | 40.59 | -105.08 | 5029 | |
| Fort Corner | city | South Carolina | United States | 33.08 | -79.63 | 26 | |
| Fort Couch | city | Pennsylvania | United States | 40.25 | -76.90 | 830 | |
| Fort Covington | city | New York | United States | 44.99 | -74.49 | 196 | |
| Fort Covington Center | city | New York | United States | 44.95 | -74.46 | 200 | |
| Fort Crockett | city | Texas | United States | 29.27 | -94.82 | 0 | |
| Fort Crook | city | Nebraska | United States | 41.13 | -95.93 | 1020 |