QuickFacts

Population per square mile in Maricopa County, Arizona is

414.9

Median household income of San Diego County, California is

$64,309

The population of Cook County, Illinois is

5,238,216

23.7%

of persons in Ohio are under 18 years

28.0%

of persons in Harris County, Texas are under 18 years

12.5%

of persons in Illinois are 65 years and over

Population per square mile in Illinois is

231.1

Population per square mile in North Carolina is

196.1

The population of Texas is

27,862,596

17.3%

of persons in Florida are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census