QuickFacts

12.5%

of persons in Illinois are 65 years and over

24.4%

of persons in Illinois are under 18 years

The population of Illinois is

12,801,539

22.3%

of persons in New York are under 18 years

26.4%

of persons in Maricopa County, Arizona are under 18 years

23.9%

of persons in North Carolina are under 18 years

Population per square mile in Harris County, Texas is

2,402.4

The population of Illinois is

12,801,539

Median household income of Chicago city, Illinois is

$48,522

13.5%

of persons in New York are 65 years and over

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census