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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.
When the clock strikes midnight and we move from 2013 into 2014 the United States population will have reached a new record of more than 317 million people, according to U.S. Census Bureau estimates.