QuickFacts

23.1%

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

9.0%

of persons in Houston city, Texas are 65 years and over

Population per square mile in Maricopa County, Arizona is

414.9

The population of San Diego County, California is

3,299,521

Population per square mile in San Diego County, California is

735.8

23.7%

of persons in Ohio are under 18 years

Population per square mile in Cook County, Illinois is

5,495.1

11.4%

of persons in California are 65 years and over

Median household income of California is

$61,818

Population per square mile in New York is

411.2

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census