Business planning by county

District of Columbia county reference

1 counties and county equivalents in District of Columbia. Search names or FIPS codes, compare Census geography and keep the original sources with your work.

District of Columbia
District of Columbia · FIPS 11001
693,645 residents · 2025 estimate

Use the county data

Use a county reference when organizing a market-research brief, outreach territory or business calculation. County population gives geographic context; it does not measure the number of qualified customers.

These are geographic reference records, not contact lists or verified sales leads.

Download District of Columbia JSON Download all counties CSV Read product guides All states and territories

Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.