QuickFacts

Population per square mile in San Diego County, California is

735.8

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

25.0%

of persons in California are under 18 years

28.0%

of persons in Harris County, Texas are under 18 years

26.4%

of persons in Maricopa County, Arizona are under 18 years

29.8%

of persons 25 years+ in Houston city, Texas have a bachelor's degree or higher

The population of Ohio is

11,613,423

Population per square mile in Chicago city, Illinois is

11,841.8

9.0%

of persons in Houston city, Texas are 65 years and over

8.1%

of persons in Harris County, Texas are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census