The current population of the United States of America is 323,444,513 as of Friday, March 18, 2016, based on the latest United Nations estimates and 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 and 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) and 82.5 % of the population is urban (268,012,791 people in 2016).The median age in the United States is 38.1…