County data workflow reference

Delaware county reference

3 counties and county equivalents in Delaware. Search names or FIPS codes, compare Census geography and keep the original sources with your work.

• Kent County

  Delaware · FIPS 10001

  194,786 residents · 2025 estimate

• New Castle County

  Delaware · FIPS 10003

  588,026 residents · 2025 estimate

• Sussex County

  Delaware · FIPS 10005

  277,140 residents · 2025 estimate

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.

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.