QuickFacts

23.4%

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

Median household income of Pennsylvania is

$53,115

23.1%

of persons in Chicago city, Illinois are under 18 years

10.3%

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

17.3%

of persons in Florida are 65 years and over

Median household income of Cook County, Illinois is

$54,828

23.4%

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

Population per square mile in San Diego County, California is

735.8

24.4%

of persons in Illinois are under 18 years

The population of Philadelphia city, Pennsylvania is

1,560,297

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates