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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.
There are 321,314,572 people in the United States of America. If everyone in the U.S. lined up single file, the line would stretch around the Earth almost 7 times.That's a lot of people.here are 46,459 people named John Smith in the United States. There are 1,010 people named James Bond, 106 people named Harry Potter, 453 people named George Bush, and 32 people named Emily Dickinson. However, Johnny Cash (34 people) songs aside there are, statistically speaking, very few boys named Sue.