QuickFacts

Population per square mile in California is

239.1

30.4%

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

The population of Pennsylvania is

12,784,227

12.1%

of persons in Philadelphia city, Pennsylvania are 65 years and over

Population per square mile in Maricopa County, Arizona is

414.9

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

11.4%

of persons in San Diego County, California are 65 years and over

12.1%

of persons in Maricopa County, Arizona are 65 years and over

12.1%

of persons in Maricopa County, Arizona are 65 years and over

11.9%

of persons in Cook County, Illinois are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census