QuickFacts

The population of Los Angeles County, California is

10,170,292

24.5%

of persons in Los Angeles County, California are under 18 years

24.5%

of persons in Los Angeles County, California are under 18 years

Population per square mile in Cook County, Illinois is

5,495.1

12.5%

of persons in Illinois are 65 years and over

23.7%

of persons in Michigan are under 18 years

Median household income of Harris County, Texas is

$54,457

Population per square mile in Pennsylvania is

283.9

13.5%

of persons in New York are 65 years and over

Population per square mile in New York is

411.2

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census