QuickFacts

21.3%

of persons in Florida are under 18 years

Population per square mile in Maricopa County, Arizona is

414.9

The population of Cook County, Illinois is

5,238,216

12.9%

of persons in North Carolina are 65 years and over

Population per square mile in Florida is

350.6

24.4%

of persons in Illinois are under 18 years

Median household income of Pennsylvania is

$53,599

Median household income of San Diego County, California is

$64,309

Population per square mile in Texas is

96.3

Population per square mile in Illinois is

231.1

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census