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At 3.8 million square miles (9.8 million km2) and with over 324 million people, the United States is the world's third-largest country by total area (and fourth-largest by land area) and the third-most populous.
The current US Census Bureau world population estimate in 2016 shows that there are approximately 7,346,235,000 people on earth as of August 23, 2016, which far exceeds the population of 7.2 billion from 2015.