QuickFacts

12.1%

of persons in New York city, New York are 65 years and over

21.6%

of persons in New York city, New York are under 18 years

The population of Chicago city, Illinois is

2,720,546

Median household income of California is

$61,818

Population per square mile in Cook County, Illinois is

5,495.1

24.4%

of persons in Illinois are under 18 years

Median household income of Maricopa County, Arizona is

$54,229

The population of Pennsylvania is

12,784,227

Population per square mile in Illinois is

231.1

Median household income of Pennsylvania is

$53,599

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey