QuickFacts

13.8%

of persons in Michigan are 65 years and over

Population per square mile in Harris County, Texas is

2,402.4

Median household income of Cook County, Illinois is

$55,251

The population of Maricopa County, Arizona is

4,167,947

The population of North Carolina is

10,146,788

Population per square mile in Ohio is

282.3

Population per square mile in Maricopa County, Arizona is

414.9

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

27,012.5

Population per square mile in Cook County, Illinois is

5,495.1

11.4%

of persons in California are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census