QuickFacts

24.4%

of persons in Illinois are under 18 years

8.1%

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

35.8%

of persons 25 years+ in Cook County, Illinois have a bachelor's degree or higher

23.9%

of persons in North Carolina are under 18 years

Population per square mile in Michigan is

174.8

28.8%

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

Population per square mile in Maricopa County, Arizona is

414.9

12.9%

of persons in North Carolina are 65 years and over

The population of San Diego County, California is

3,299,521

The population of Harris County, Texas is

4,538,028

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates