QuickFacts

The population of Cook County, Illinois is

5,238,216

Population per square mile in Florida is

350.6

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

11.4%

of persons in San Diego County, California are 65 years and over

23.7%

of persons in Michigan are under 18 years

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

30.4%

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

In Florida

54.7%

of females 16 years+ are in the civilian labor force

Population per square mile in Pennsylvania is

283.9

15.4%

of persons in Pennsylvania are 65 years and over

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census