QuickFacts

Population per square mile in Pennsylvania is

283.9

23.7%

of persons in Cook County, Illinois are under 18 years

Median household income of Cook County, Illinois is

$55,251

15.4%

of persons in Pennsylvania are 65 years and over

10.7%

of persons in Georgia are 65 years and over

30.4%

of persons 25 years+ in Houston city, Texas have a bachelor's degree or higher

Median household income of Houston city, Texas is

$46,187

10.9%

of persons in Los Angeles County, California are 65 years and over

21.6%

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

The population of Illinois is

12,801,539

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates