Will US population growth slow to zero within three decades?
Core argument: CBO projects the U.S. population rises from 349 million in 2026 to 364 million in 2056, with growth slowing from an average 0.3% a year over the next decade to 0.1% a year thereafter.
In CBO’s projections, the population increases from 349 million people in 2026 to 364 million in 2056. Population growth slows during that period—from an average rate of 0.3% a year over the next decade to 0.1% a year thereafter. Through 2029, the population grows because more people are projected to migrate to the United States than to leave it (positive net immigration) and because the annual number of births is projected to exceed the annual number of deaths. Starting in 2030, declining fertility rates are projected to cause births to fall short of deaths. Over time, the negative net contribution of births and deaths increasingly offsets the positive contribution of net immigration, until population growth slows to zero in 2056. The population is projected to shrink thereafter.

