QuickFacts

23.4%

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

28.0%

of persons in Harris County, Texas are under 18 years

23.7%

of persons in Cook County, Illinois are under 18 years

10.5%

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

12.5%

of persons in Illinois are 65 years and over

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

29.5%

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

27.6%

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

28.6%

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

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census