QuickFacts

Population per square mile in San Diego County, California is

735.8

12.5%

of persons in Illinois are 65 years and over

The population of Los Angeles city, California is

3,971,883

23.7%

of persons in Michigan are under 18 years

23.1%

of persons in Chicago city, Illinois are under 18 years

12.1%

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

The population of Philadelphia city, Pennsylvania is

1,567,442

10.5%

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

12.1%

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

Population per square mile in Michigan is

174.8

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census