Black Label Operator

County data workflow reference

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.

Use the county data

Use the public county JSON as a small, reproducible input for a coding mission. A useful example is validating FIPS codes, grouping rows by state and producing a documented report that another person can run.

County references are sample public inputs; a page does not represent a completed customer mission or a supported government-system integration.

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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.