QuickFacts

12.1%

of persons in Philadelphia city, Pennsylvania are 65 years and over

28.0%

of persons in Harris County, Texas are under 18 years

10.3%

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

Median household income of Cook County, Illinois is

$55,251

Population per square mile in Florida is

350.6

Population per square mile in California is

239.1

Population per square mile in Los Angeles County, California is

2,419.6

The population of Florida is

20,612,439

22.0%

of persons in Pennsylvania are under 18 years

Median household income of Harris County, Texas is

$54,457

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey