RANKING · 2020 CENSUS · 335 SHOWN OF 335
Largest by population, Illinois cities · 2020
The most populous Illinois cities as of the 2020 population estimates. This list covers the 335 cities in Illinois that qualify, ranked against each other statewide.
Largest by population by state
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RANKPLACESTATETOTAL POPULATIONVS 2000
SHOWING 1–335 OF 335
UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS