QuickFacts

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

13.8%

of persons in Michigan are 65 years and over

Population per square mile in Illinois is

231.1

Population per square mile in Michigan is

174.8

25.4%

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

The population of Michigan is

9,928,300

12.1%

of persons in New York city, New York are 65 years and over

23.7%

of persons in Cook County, Illinois are under 18 years

Population per square mile in Pennsylvania is

283.9

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census