QuickFacts

10.3%

of persons in Chicago city, Illinois are 65 years and over

23.4%

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

Population per square mile in New York is

411.2

Population per square mile in Michigan is

174.8

Median household income of Cook County, Illinois is

$55,251

Population per square mile in Maricopa County, Arizona is

414.9

34.2%

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

Median household income of Chicago city, Illinois is

$48,522

28.6%

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

The population of Pennsylvania is

12,784,227

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates