As the nation prepares to ring in the new year, the U.S. Census Bureau projected the U.S. population will be 335,893,238 at midnight EST, on Jan. 1, 2024. This represents an increase of 1,759,535 (0.53%) from Jan. 1, 2023, and 4,443,957 (1.34%) from Census Day (April 1) 2020.