RANKING · 2020 CENSUS · 51 SHOWN OF 51
Most densely populated, US states · 2020
US states ranked by residents per square mile (2020). District of Columbia leads at 11,304. 51 states qualify in total. The top 25 average 814, against an all-states median of 109.
Flip the list · Most sparsely populated, US states →All statesAll rankings
RANKPLACESTATEPOPPOPULATION DENSITYVS 2000
USUnited States331,449,281280–
SHOWING 1–51 OF 51
UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS
Frequently asked
Which state has the highest population density?
District of Columbia ranks #1 with 11,304 (2020 Decennial Census).
What are the top 5 states by population density?
District of Columbia, New Jersey, Rhode Island, Massachusetts, Connecticut.
How many states are in this ranking?
51 states qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.
How is population density measured?
Residents per square mile of land area. Source: US Census Bureau, 2020 Decennial Census.