QuickFacts

The population of Maricopa County, Arizona is

4,167,947

The population of Cook County, Illinois is

5,238,216

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

The population of Pennsylvania is

12,784,227

35.8%

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

26.9%

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

12.1%

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

Median household income of Maricopa County, Arizona is

$54,229

Median household income of Maricopa County, Arizona is

$54,229

Median household income of Pennsylvania is

$53,599

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey