The current population of the United States of America is 328,437,081 as of Thursday, March 21, 2019, based on the latest United Nations estimates.
The United States population is equivalent to 4.27% of the total world population.
The U.S.A. ranks number 3 in the list of countries (and dependencies) by population.
The population density in the United States is 36 per Km2 (93 people per mi2).
83.9 % of the population is urban (276,062,331 people in 2019)