QuickFacts

24.4%

of persons in Illinois are under 18 years

11.4%

of persons in San Diego County, California are 65 years and over

Median household income of Cook County, Illinois is

$55,251

Population per square mile in Los Angeles County, California is

2,419.6

Population per square mile in New York city, New York is

27,012.5

12.9%

of persons in North Carolina are 65 years and over

10.7%

of persons in Georgia are 65 years and over

12.1%

of persons in Maricopa County, Arizona are 65 years and over

22.3%

of persons in New York are under 18 years

23.7%

of persons in Cook County, Illinois are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census