QuickFacts

Median household income of Chicago city, Illinois is

$48,522

The population of Illinois is

12,801,539

23.7%

of persons in Michigan are under 18 years

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

23.1%

of persons in Chicago city, Illinois are under 18 years

23.7%

of persons in Cook County, Illinois are under 18 years

The population of San Diego County, California is

3,299,521

12.1%

of persons in Maricopa County, Arizona are 65 years and over

The population of Maricopa County, Arizona is

4,167,947

The population of Chicago city, Illinois is

2,720,546

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates