QuickFacts

Population per square mile in San Diego County, California is

735.8

Population per square mile in Cook County, Illinois is

5,495.1

13.5%

of persons in New York are 65 years and over

Population per square mile in Illinois is

231.1

Median household income of Illinois is

$57,574

25.0%

of persons in California are under 18 years

10.5%

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

22.3%

of persons in New York are under 18 years

Population per square mile in Los Angeles County, California is

2,419.6

23.9%

of persons in North Carolina are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census