QuickFacts

23.4%

of persons in San Diego County, California are under 18 years

Population per square mile in Illinois is

231.1

The population of Ohio is

11,614,373

12.1%

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

24.5%

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

Population per square mile in Florida is

350.6

23.4%

of persons in San Diego County, California are under 18 years

The population of Maricopa County, Arizona is

4,167,947

The population of Philadelphia city, Pennsylvania is

1,567,442

27.3%

of persons in Texas are under 18 years

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census