District of Columbia Counties
By Marko Visic · Updated Oct 5, 2026
The District of Columbia has one county-equivalent, covering 61 square miles of land. The Census Bureau estimates its population at 693,645 as of July 1, 2025.
Tap or click any county-equivalent for details. Need a printable version? Blank District of Columbia map (PDF/PNG/SVG).
District of Columbia county-equivalent
| County-equivalent | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| District of Columbia | 11001 | 693,645 | +0.6% | 61 | 11,348 | $109,870 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
How many county-equivalents does the District of Columbia have?
The District of Columbia is a federal district, not a state, and is not subdivided into counties. The US Census Bureau treats DC as a single county-equivalent (FIPS code 11001) for statistical purposes. Its neighborhoods and wards function as local administrative groupings within that single jurisdiction.
Washington is both the state capital and the largest city in District of Columbia.
Related resources
Download a printable outline of District of Columbia’s county-equivalent boundaries from our blank map of District of Columbia page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which District of Columbia county-equivalent a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any District of Columbia address and see every ZIP code and the total population inside.
The county-counts blog post puts DC’s status as a single county-equivalent in national context alongside the 50 states.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.