QuickFacts

21.6%

of persons in New York city, New York are under 18 years

21.3%

of persons in Florida are under 18 years

Median household income of Harris County, Texas is

$54,457

The population of Los Angeles County, California is

10,170,292

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Population per square mile in North Carolina is

196.1

28.0%

of persons in Harris County, Texas are under 18 years

Population per square mile in Chicago city, Illinois is

11,841.8

26.4%

of persons in Maricopa County, Arizona are under 18 years

The population of Illinois is

12,801,539

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates