QuickFacts

The population of New York city, New York is

8,550,405

Population per square mile in Harris County, Texas is

2,402.4

Population per square mile in Illinois is

231.1

13.8%

of persons in Michigan are 65 years and over

The population of San Diego County, California is

3,299,521

Population per square mile in California is

239.1

Population per square mile in Ohio is

282.3

11.4%

of persons in California are 65 years and over

Population per square mile in Maricopa County, Arizona is

414.9

21.3%

of persons in Florida are under 18 years

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census