QuickFacts

Population per square mile in Cook County, Illinois is

5,495.1

25.0%

of persons in California are under 18 years

8.1%

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

11.4%

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

Median household income of Maricopa County, Arizona is

$54,229

The population of Michigan is

9,928,300

23.7%

of persons in Cook County, Illinois are under 18 years

13.5%

of persons in New York are 65 years and over

23.7%

of persons in Ohio are under 18 years

9.0%

of persons in Houston city, Texas are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census