QuickFacts

11.9%

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

The population of Florida is

20,612,439

25.0%

of persons in California are under 18 years

12.1%

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

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Population per square mile in San Diego County, California is

735.8

Median household income of Houston city, Texas is

$46,187

12.1%

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

The population of Chicago city, Illinois is

2,720,546

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

Source: Population Estimates

Source: 2010 Census