QuickFacts

11.4%

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

26.9%

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

Median household income of Maricopa County, Arizona is

$54,229

Population per square mile in Maricopa County, Arizona is

414.9

The population of Illinois is

12,801,539

The population of Philadelphia city, Pennsylvania is

1,567,442

10.3%

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

17.3%

of persons in Florida are 65 years and over

Population per square mile in Illinois is

231.1

Population per square mile in Chicago city, Illinois is

11,841.8

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census