QuickFacts

Population per square mile in Maricopa County, Arizona is

414.9

15.4%

of persons in Pennsylvania are 65 years and over

12.5%

of persons in Illinois are 65 years and over

Population per square mile in Ohio is

282.3

10.3%

of persons in Chicago city, Illinois are 65 years and over

12.5%

of persons in Illinois are 65 years and over

23.9%

of persons in North Carolina are under 18 years

Population per square mile in Chicago city, Illinois is

11,841.8

24.5%

of persons in Los Angeles County, California are under 18 years

28.4%

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

Source: 2010 Census

Source: American Community Survey