Population density by county

Every US county shaded by population per square mile — drag the year slider or press ▶ to animate 2010–2023. Colors use one pooled quantile scale across all years, so shades are comparable over time. Click a county for its value and that year's national rank. Grey = no estimate. 3,222 of 3,235 countys have 2023 data.

2023

2023 Population per square mile: extremes

Highest 20

Lowest 20

Population per square mile

Generated by Facetwork workflow census.workflows.BuildCountyTimeMapsUS(metric=population_density, start_year=2010, end_year=2023) · view FFL · source repo · generated 2026-07-15 03:11 UTC