QuickFacts

23.7%

of persons in Ohio are under 18 years

10.3%

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

8.1%

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

12.1%

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

The population of Los Angeles city, California is

3,971,883

Population per square mile in North Carolina is

196.1

11.9%

of persons in Cook County, Illinois are 65 years and over

The population of Michigan is

9,928,300

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Median household income of Cook County, Illinois is

$55,251

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey