QuickFacts

28.0%

of persons in Harris County, Texas are under 18 years

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

In Ohio

59.0%

of females 16 years+ are in the civilian labor force

26.4%

of persons in Maricopa County, Arizona are under 18 years

The population of San Diego County, California is

3,299,521

Population per square mile in Pennsylvania is

283.9

The population of Pennsylvania is

12,784,227

10.3%

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

11.9%

of persons in Cook County, Illinois are 65 years and over

Population per square mile in Michigan is

174.8

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census