QuickFacts

21.6%

of persons in New York city, New York are under 18 years

22.0%

of persons in Pennsylvania are under 18 years

Median household income of Los Angeles city, California is

$50,205

12.5%

of persons in Illinois are 65 years and over

The population of San Diego County, California is

3,299,521

The population of Harris County, Texas is

4,538,028

Population per square mile in San Diego County, California is

735.8

The population of Maricopa County, Arizona is

4,167,947

21.3%

of persons in Florida are under 18 years

The population of San Diego County, California is

3,299,521

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates