In CBO’s projections, the U.S. population increases from 342 million people in 2024 to 383 million people in 2054. Net immigration increasingly drives population growth, accounting for all population growth beginning in 2040.| Congressional Budget Office
The U.S. population is projected to reach a high of nearly 370 million in 2080 before edging downward to 366 million in 2100.| Census.gov