QuickFacts

10.9%

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

Population per square mile in Maricopa County, Arizona is

414.9

25.0%

of persons in California are under 18 years

Population per square mile in Florida is

350.6

Population per square mile in Chicago city, Illinois is

11,841.8

The population of San Diego County, California is

3,299,521

Population per square mile in San Diego County, California is

735.8

Median household income of San Diego County, California is

$64,309

31.4%

of persons 25 years+ in California have a bachelor's degree or higher

Median household income of Pennsylvania is

$53,599

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey