QuickFacts

12.1%

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

23.4%

of persons in San Diego County, California are under 18 years

The population of Cook County, Illinois is

5,238,216

25.4%

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

35.8%

of persons 25 years+ in Cook County, Illinois have a bachelor's degree or higher

23.7%

of persons in Michigan are under 18 years

Population per square mile in Cook County, Illinois is

5,495.1

Median household income of Pennsylvania is

$53,599

Median household income of Georgia is

$49,620

The population of Ohio is

11,614,373

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates