QuickFacts

22.0%

of persons in Pennsylvania are under 18 years

35.6%

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

30.4%

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

24.4%

of persons in Illinois are under 18 years

Population per square mile in San Diego County, California is

735.8

12.5%

of persons in Illinois are 65 years and over

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Population per square mile in Illinois is

231.1

The population of San Diego County, California is

3,299,521

Population per square mile in Illinois is

231.1

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census