District of Columbia
Postal abbreviation DC. 277 ZIP codes across 1 county-level areas.
| Population | 681,294 |
|---|---|
| Postal abbreviation | DC |
| ZIP codes | 277 ZIP codes → |
| Area codes | 202771 |
| Time zone | Eastern |
| Counties | 1 |
Largest cities by population
Largest counties by population
Counties in District of Columbia
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.