QuickFacts

The population of Cook County, Illinois is

5,238,216

Population per square mile in San Diego County, California is

735.8

10.7%

of persons in Georgia are 65 years and over

Population per square mile in Michigan is

174.8

Median household income of Illinois is

$57,574

The population of California is

39,250,017

23.4%

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

Population per square mile in Ohio is

282.3

14.1%

of persons in Ohio are 65 years and over

11.4%

of persons in San Diego County, California are 65 years and over

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census