QuickFacts

The population of Maricopa County, Arizona is

4,167,947

13.8%

of persons in Michigan are 65 years and over

35.8%

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

11.9%

of persons in Cook County, Illinois are 65 years and over

Population per square mile in New York city, New York is

27,012.5

23.7%

of persons in Ohio are under 18 years

The population of New York city, New York is

8,550,405

23.4%

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

17.3%

of persons in Florida are 65 years and over

Population per square mile in Chicago city, Illinois is

11,841.8

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census