QuickFacts

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Population per square mile in San Diego County, California is

735.8

14.1%

of persons in Ohio are 65 years and over

24.4%

of persons in Illinois are under 18 years

Population per square mile in California is

239.1

Population per square mile in Maricopa County, Arizona is

414.9

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

In San Diego County, California

57.2%

of females 16 years+ are in the civilian labor force

Median household income of San Diego County, California is

$64,309

The population of Los Angeles County, California is

10,170,292

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates