QuickFacts

Population per square mile in Chicago city, Illinois is

11,841.8

The population of California is

39,250,017

23.9%

of persons in North Carolina are under 18 years

Median household income of Cook County, Illinois is

$55,251

12.1%

of persons in Philadelphia city, Pennsylvania are 65 years and over

Median household income of Maricopa County, Arizona is

$54,229

Median household income of California is

$61,818

The population of Illinois is

12,801,539

23.7%

of persons in Michigan are under 18 years

The population of Maricopa County, Arizona is

4,167,947

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates