QuickFacts

Population per square mile in Maricopa County, Arizona is

414.9

The population of Los Angeles County, California is

10,170,292

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Median household income of San Diego County, California is

$64,309

23.7%

of persons in Cook County, Illinois are under 18 years

12.9%

of persons in North Carolina are 65 years and over

11.4%

of persons in California are 65 years and over

28.6%

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

15.4%

of persons in Pennsylvania are 65 years and over

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

Source: American Community Survey

Source: 2010 Census