QuickFacts

Population per square mile in Illinois is

231.1

10.7%

of persons in Georgia are 65 years and over

21.3%

of persons in Florida are under 18 years

Population per square mile in Maricopa County, Arizona is

414.9

23.4%

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

Median household income of Pennsylvania is

$53,599

Median household income of Los Angeles County, California is

$56,196

Median household income of San Diego County, California is

$64,309

The population of Michigan is

9,928,300

12.5%

of persons in Illinois are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census