QuickFacts

Population per square mile in Los Angeles County, California is

2,419.6

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

21.6%

of persons in New York city, New York are under 18 years

Median household income of San Diego County, California is

$64,309

Population per square mile in California is

239.1

11.4%

of persons in California are 65 years and over

24.4%

of persons in Illinois are under 18 years

Median household income of California is

$61,818

The population of Cook County, Illinois is

5,238,216

22.0%

of persons in Pennsylvania are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census