QuickFacts

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Population per square mile in California is

239.1

23.1%

of persons in Chicago city, Illinois are under 18 years

The population of Los Angeles city, California is

3,971,883

The population of Maricopa County, Arizona is

4,167,947

Median household income of Los Angeles County, California is

$56,196

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

22.3%

of persons in New York are under 18 years

23.4%

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

25.7%

of persons in Georgia are under 18 years

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census