QuickFacts

23.4%

of persons in San Diego County, California are under 18 years

The population of Michigan is

9,922,576

The population of Illinois is

12,859,995

Median household income of Michigan is

$49,087

Median household income of New York city, New York is

$52,737

26.4%

of persons in Maricopa County, Arizona are under 18 years

The population of New York city, New York is

8,491,079

The population of Cook County, Illinois is

5,246,456

The population of California is

39,144,818

12.1%

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

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census