QuickFacts

Population per square mile in Illinois is

231.1

24.5%

of persons in Los Angeles County, California are under 18 years

25.0%

of persons in California are under 18 years

Median household income of Illinois is

$57,574

13.5%

of persons in New York are 65 years and over

Population per square mile in San Diego County, California is

735.8

Population per square mile in Harris County, Texas is

2,402.4

8.1%

of persons in Harris County, Texas are 65 years and over

25.0%

of persons in California are under 18 years

Population per square mile in Pennsylvania is

283.9

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census