QuickFacts

21.6%

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

23.1%

of persons in Chicago city, Illinois are under 18 years

Population per square mile in Houston city, Texas is

3,501.5

11.4%

of persons in San Diego County, California are 65 years and over

23.1%

of persons in Chicago city, Illinois are under 18 years

11.4%

of persons in California are 65 years and over

Population per square mile in Harris County, Texas is

2,402.4

The population of Los Angeles County, California is

10,170,292

13.8%

of persons in Michigan are 65 years and over

23.7%

of persons in Ohio are under 18 years

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census