QuickFacts

The population of Michigan is

9,922,576

The population of Florida is

20,271,272

Population per square mile in Cook County, Illinois is

5,495.1

Population per square mile in Ohio is

282.3

12.1%

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

23.9%

of persons in North Carolina are under 18 years

17.3%

of persons in Florida are 65 years and over

15.4%

of persons in Pennsylvania are 65 years and over

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

The population of California is

39,144,818

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates