QuickFacts

Population per square mile in San Diego County, California is

735.8

15.4%

of persons in Pennsylvania are 65 years and over

Population per square mile in Illinois is

231.1

25.4%

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

11.4%

of persons in California are 65 years and over

12.1%

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

Population per square mile in Maricopa County, Arizona is

414.9

Population per square mile in Houston city, Texas is

3,501.5

12.1%

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

Population per square mile in Los Angeles County, California is

2,419.6

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census