QuickFacts

The population of Illinois is

12,801,539

Population per square mile in Cook County, Illinois is

5,495.1

25.7%

of persons in Georgia are under 18 years

13.8%

of persons in Michigan are 65 years and over

12.1%

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

Median household income of Philadelphia city, Pennsylvania is

$38,253

Population per square mile in Pennsylvania is

283.9

12.1%

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

Population per square mile in North Carolina is

196.1

10.3%

of persons in Texas are 65 years and over

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census