QuickFacts

10.3%

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

Population per square mile in Chicago city, Illinois is

11,841.8

11.9%

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

Population per square mile in Maricopa County, Arizona is

414.9

Population per square mile in California is

239.1

13.8%

of persons in Michigan are 65 years and over

25.0%

of persons in California are under 18 years

12.1%

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

35.6%

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

27.6%

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

Source: 2010 Census

Source: American Community Survey