QuickFacts

8.1%

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

Population per square mile in Los Angeles city, California is

8,092.3

26.4%

of persons in Maricopa County, Arizona are under 18 years

31.4%

of persons 25 years+ in California have a bachelor's degree or higher

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

23.4%

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

Population per square mile in Maricopa County, Arizona is

414.9

The population of Los Angeles city, California is

3,971,883

The population of San Diego County, California is

3,299,521

23.7%

of persons in Ohio are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census