QuickFacts

The population of Los Angeles city, California is

3,971,883

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

26.4%

of persons in Maricopa County, Arizona are under 18 years

12.1%

of persons in Maricopa County, Arizona are 65 years and over

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

23.7%

of persons in Michigan are under 18 years

Population per square mile in New York city, New York is

27,012.5

Population per square mile in Cook County, Illinois is

5,495.1

11.4%

of persons in California are 65 years and over

The population of Texas is

27,862,596

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates