U.S. district comparison data · DC
District of Columbia: area, population and density
District of Columbia has 61.1 sq mi of land and a 2025 population estimate of 693,645; calculated population density is 4,381 people/km².
Sources: U.S. Census Bureau Gazetteer Files · 2026 · U.S. Census Bureau Population Estimates Program · 2025.
District of Columbia ranks 51st of 51 by land area, 49th by population and 1st by calculated population density among the U.S. states and DC. Density uses the displayed population divided by land area converted to square kilometres.
- Land area
- 61.1 sq miU.S. Census Bureau Gazetteer Files · 2026
- Population
- 693,645U.S. Census Bureau Population Estimates Program · 2025
- Calculated density
- 4,381 people/km²Population ÷ land area in km²
Reading the figures
District of Columbia in the U.S. comparison set
District of Columbia has 61.1 sq mi of land area and a population estimate of 693,645 for 2025. In the 51-place state and DC set, it is 51st by land area, 49th by population, and 1st by calculated density.
Density is not a separately reported value here. It is calculated from the population and land area above, converted to square kilometres, so the result can be compared with supported country figures.
U.S. boundary outline: Census TIGER/Line 2025. The drawing is fitted to this profile panel; use a comparison page for a shared-area scale.