QuickFacts

24.5%

of persons in Los Angeles County, California are under 18 years

10.3%

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

Population per square mile in San Diego County, California is

735.8

Median household income of Ohio is

$49,429

Median household income of Michigan is

$49,576

23.7%

of persons in Cook County, Illinois are under 18 years

The population of Illinois is

12,801,539

Population per square mile in Pennsylvania is

283.9

Population per square mile in Florida is

350.6

25.7%

of persons in Georgia are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census