QuickFacts

The population of Cook County, Illinois is

5,238,216

Population per square mile in Maricopa County, Arizona is

414.9

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

22.0%

of persons in Pennsylvania are under 18 years

The population of Pennsylvania is

12,784,227

28.6%

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

The population of Texas is

27,862,596

In Cook County, Illinois

61.0%

of females 16 years+ are in the civilian labor force

29.5%

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

The population of San Diego County, California is

3,299,521

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: Population Estimates

Source: American Community Survey

Source: Population Estimates