District of Columbia Counties
Complete list of all 1 county-equivalents in District of Columbia with population, area, median income, and county seats — plus a free printable blank map.
Labeled outline map of District of Columbia county-equivalents. Download a printable version in SVG, PNG, or PDF.
All 2 District of Columbia county-equivalents
| County | County Seat | Population ▼ | Area | Median Income | Cities |
|---|---|---|---|---|---|
| District of Columbia | — | 681,294 | 61 mi² | $113,834 | 4 |
| Loudoun | — | 431,177 | 0 mi² | $182,907 | 17 |
How many county-equivalents does 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 70 neighborhoods and 8 wards function as local administrative groupings within that single jurisdiction.
The largest county-equivalent by land area is District of Columbia County at 61 square miles, home to about 681,294 residents.
At the other end of the scale, Loudoun County has only about 431,177 residents.
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
Population and demographics are aggregated from ZIP-code-level US Census data via the SimpleMaps dataset. County-equivalentsboundaries are from the US Atlas TopoJSON build of the Census Bureau’s TIGER/Line shapefiles. Land area is from the Census Gazetteer. State counts follow the US Census Bureau’s definition of counties and county-equivalents (50 states + DC = 3,143). All sources are public domain.