QuickFacts

The population of Illinois is

12,801,539

Population per square mile in San Diego County, California is

735.8

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

23.7%

of persons in Michigan are under 18 years

13.5%

of persons in New York are 65 years and over

23.7%

of persons in Ohio are under 18 years

28.0%

of persons in Harris County, Texas are under 18 years

Median household income of Chicago city, Illinois is

$48,522

31.4%

of persons 25 years+ in California have a bachelor's degree or higher

31.4%

of persons 25 years+ in California have a bachelor's degree or higher

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey