QuickFacts

23.1%

of persons in Chicago city, Illinois are under 18 years

15.4%

of persons in Pennsylvania are 65 years and over

The population of California is

39,250,017

The population of Harris County, Texas is

4,538,028

12.5%

of persons in Illinois are 65 years and over

Population per square mile in Cook County, Illinois is

5,495.1

The population of New York is

19,745,289

22.3%

of persons in New York are under 18 years

Median household income of Chicago city, Illinois is

$48,522

The population of Philadelphia city, Pennsylvania is

1,567,442

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates