QuickFacts

23.4%

of persons in San Diego County, California are under 18 years

24.5%

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

22.0%

of persons in Pennsylvania are under 18 years

25.0%

of persons in California are under 18 years

35.6%

of persons 25 years+ in Chicago city, Illinois have a bachelor's degree or higher

22.0%

of persons in Pennsylvania are under 18 years

24.4%

of persons in Illinois are under 18 years

The population of Los Angeles County, California is

10,170,292

Population per square mile in Florida is

350.6

Population per square mile in Pennsylvania is

283.9

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census