QuickFacts

26.4%

of persons in Maricopa County, Arizona are under 18 years

The population of Philadelphia city, Pennsylvania is

1,567,442

12.1%

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

10.3%

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

12.5%

of persons in Illinois are 65 years and over

Median household income of Cook County, Illinois is

$55,251

The population of Illinois is

12,801,539

Median household income of Chicago city, Illinois is

$48,522

8.1%

of persons in Harris County, Texas are 65 years and over

The population of Michigan is

9,928,300

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates