QuickFacts

24.4%

of persons in Illinois are under 18 years

15.4%

of persons in Pennsylvania are 65 years and over

28.0%

of persons in Harris County, Texas are under 18 years

Population per square mile in Houston city, Texas is

3,501.5

Median household income of Maricopa County, Arizona is

$54,229

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Median household income of New York is

$59,269

25.0%

of persons in California are under 18 years

Population per square mile in Los Angeles County, California is

2,419.6

Population per square mile in San Diego County, California is

735.8

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census