QuickFacts

Population per square mile in Illinois is

231.1

26.4%

of persons in Maricopa County, Arizona are under 18 years

The population of Michigan is

9,928,300

Population per square mile in Pennsylvania is

283.9

The population of Cook County, Illinois is

5,238,216

10.3%

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

28.0%

of persons in Harris County, Texas are under 18 years

23.1%

of persons in Chicago city, Illinois are under 18 years

In Michigan

57.1%

of females 16 years+ are in the civilian labor force

The population of Pennsylvania is

12,784,227

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates