QuickFacts

12.5%

of persons in Illinois are 65 years and over

Population per square mile in Los Angeles County, California is

2,419.6

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Population per square mile in Michigan is

174.8

25.0%

of persons in California are under 18 years

30.4%

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

8.1%

of persons in Harris County, Texas are 65 years and over

30.4%

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

23.7%

of persons in Michigan are under 18 years

The population of Pennsylvania is

12,784,227

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates