QuickFacts

22.0%

of persons in Pennsylvania are under 18 years

Median household income of California is

$61,818

The population of Cook County, Illinois is

5,238,216

23.4%

of persons in San Diego County, California are under 18 years

12.1%

of persons in Philadelphia city, Pennsylvania are 65 years and over

Population per square mile in Maricopa County, Arizona is

414.9

The population of Florida is

20,612,439

28.0%

of persons in Harris County, Texas are under 18 years

10.5%

of persons in Los Angeles city, California are 65 years and over

23.1%

of persons in Chicago city, Illinois are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census