QuickFacts

The population of Maricopa County, Arizona is

4,167,947

Population per square mile in Florida is

350.6

12.1%

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

23.9%

of persons in North Carolina are under 18 years

23.4%

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

Median household income of Los Angeles County, California is

$56,196

The population of Chicago city, Illinois is

2,720,546

Population per square mile in Florida is

350.6

17.3%

of persons in Florida are 65 years and over

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census