USA Population Prof description

The current population of the United States of America is 324,910,537 as of Wednesday, November 2, 2016, based on the latest United Nations estimates.
The United States population is equivalent to 4.38% of the total world population.
The U.S.A. ranks number 3 in the list of countries by population.
The population density in the United States is 35 per Km2 (92 people per mi2).
The total land area is 9,155,898 Km2 (3,535,111 sq. miles)
82.5 % of the population is urban (268,012,791 people in 2016)
The median age in the United States is 38.1 years.
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