| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Capitol Hill | city | District of Columbia | United States | 38.89 | -77.00 | 52 | |
| Capitol View | city | District of Columbia | United States | 38.89 | -76.93 | 150 | |
| Carrollsburg (historical) | city | District of Columbia | United States | 38.88 | -77.01 | 39 | |
| Cathedral Heights | city | District of Columbia | United States | 38.93 | -77.08 | 252 | |
| Central Northeast | city | District of Columbia | United States | 38.90 | -76.94 | 98 | |
| Chevy Chase | city | District of Columbia | United States | 38.96 | -77.07 | 285 | |
| Chevy Chase Heights | city | District of Columbia | United States | 38.96 | -77.08 | 334 | |
| Chillum Station | city | District of Columbia | United States | 38.96 | -77.00 | 131 | |
| Chinatown | city | District of Columbia | United States | 38.90 | -77.02 | 39 | |
| Clark Mills Estate Subdivision (historical) | city | District of Columbia | United States | 38.93 | -76.97 | 72 | |
| Cleveland Park | city | District of Columbia | United States | 38.94 | -77.07 | 252 | |
| Cloisters | city | District of Columbia | United States | 38.91 | -77.07 | 39 | |
| Colonial Village | city | District of Columbia | United States | 38.99 | -77.04 | 236 | |
| Colony Hill | city | District of Columbia | United States | 38.91 | -77.09 | 121 | |
| Columbia Heights | city | District of Columbia | United States | 38.93 | -77.03 | 124 | |
| Congress Heights | city | District of Columbia | United States | 38.84 | -77.00 | 121 | |
| Congress Park | city | District of Columbia | United States | 38.84 | -76.99 | 124 | |
| Cookes Park | city | District of Columbia | United States | 38.91 | -77.06 | 42 | |
| Cowtown (historical) | city | District of Columbia | United States | 38.93 | -77.03 | 118 | |
| Crestwood | city | District of Columbia | United States | 38.94 | -77.04 | 154 |