QuickFacts

26.4%

of persons in Maricopa County, Arizona are under 18 years

Population per square mile in Cook County, Illinois is

5,495.1

10.3%

of persons in Texas are 65 years and over

Population per square mile in Pennsylvania is

283.9

The population of Pennsylvania is

12,784,227

Population per square mile in California is

239.1

23.7%

of persons in Cook County, Illinois are under 18 years

In Pennsylvania

58.3%

of females 16 years+ are in the civilian labor force

Median household income of San Diego County, California is

$64,309

25.7%

of persons in Georgia are under 18 years

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census