QuickFacts

Population per square mile in New York is

411.2

23.7%

of persons in Cook County, Illinois are under 18 years

28.6%

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

22.0%

of persons in Pennsylvania are under 18 years

Population per square mile in Michigan is

174.8

Median household income of Maricopa County, Arizona is

$54,229

12.1%

of persons in Maricopa County, Arizona are 65 years and over

Median household income of Harris County, Texas is

$54,457

The population of Cook County, Illinois is

5,238,216

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: American Community Survey

Source: Population Estimates