QuickFacts

21.6%

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

26.4%

of persons in Maricopa County, Arizona are under 18 years

The population of New York is

19,745,289

23.1%

of persons in Chicago city, Illinois are under 18 years

12.1%

of persons in New York city, New York are 65 years and over

10.5%

of persons in Los Angeles city, California are 65 years and over

The population of Ohio is

11,614,373

The population of Cook County, Illinois is

5,238,216

Population per square mile in Houston city, Texas is

3,501.5

12.5%

of persons in Illinois are 65 years and over

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census