The basics
Total Population
12,694,798
Median Age
39
Population Density
228.68
Climate & hazard risk
Greatest FEMA-rated hazard: tornado.
Go deeper
Explore every county, ZIP code, and census tract in Illinois — demographics, housing, climate, and risk — on the interactive map.
Explore Illinois on the map →Sources: U.S. Census ACS, FEMA National Risk Index, FHFA House Price Index, OpenStreetMap, EPA. Explore the map →