RANKING · 2020 CENSUS · 335 SHOWN OF 335
Most sparsely populated, Illinois cities · 2020
Illinois cities with the fewest residents per square mile (2020). This list covers the 335 cities in Illinois that qualify, ranked against each other statewide. The median across all 335 is 2,226.
Flip the list · Most densely populated, US cities →Most sparsely populated by state
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RANKPLACESTATEPOPPOPULATION DENSITYVS 2000
SHOWING 1–335 OF 335
UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS