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US county population density, 2025

Compare 2025 population estimates and population per square kilometre for US counties and county equivalents.

Preview of US county population density, 2025
US Census Bureau. Vintage 2025 county population estimates and 2025 cartographic boundaries. Population divided by source land area; boundaries simplified on 2026-09-15.

About this dataset

  • This map joins Census Bureau Vintage 2025 population estimates to 2025 county and county-equivalent boundaries.
  • Density is the population estimate divided by land area in square kilometres. Water area is excluded.
  • The selection covers counties and county equivalents in the 50 states and the District of Columbia. Puerto Rico and other territories are excluded.
  • Open the map to compare county density values and add your own notes. The map does not show population within each part of a county.
  • Boundaries are simplified for display. Estimates and county definitions can change between releases.

Source and licence

US Census Bureau

Licence: Public domain

GeoJSON download details

The download includes all 3,144 features as area groups, areas. Coordinates use longitude and latitude in WGS84.

The preparation date is when we prepared this dataset. Read the source notes for the dates covered by the data.

GeoJSON fields 6
name
County or county-equivalent name.
county_fips
Five-digit county geographic identifier.
state_fips
Two-digit state identifier.
population_2025
July 1, 2025 population estimate.
land_area_km2
Source land area in square kilometres.
people_per_km2
Estimated population divided by land area.