QuickFacts

Population per square mile in Harris County, Texas is

2,402.4

The population of Illinois is

12,801,539

Population per square mile in Chicago city, Illinois is

11,841.8

12.1%

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

24.5%

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

12.9%

of persons in North Carolina are 65 years and over

Population per square mile in Houston city, Texas is

3,501.5

14.1%

of persons in Ohio are 65 years and over

35.7%

of persons 25 years+ in San Diego County, California have a bachelor's degree or higher

21.3%

of persons in Florida are under 18 years

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census