Will immigration account for all U.S. population growth in coming decades?
Core argument: CBO projects the U.S. population will grow an average 0.2% per year from 2025 to 2055, less than one-fifth the 0.9% average annual rate recorded from 1975 to 2024.
In CBO’s projections, the population grows at an average rate of 0.2% per year. That rate is less than one-fifth the average annual growth rate seen from 1975 to 2024, when it was 0.9% per year. The annual number of births is projected to exceed the annual number of deaths through 2030. Those net births account for about one-quarter of projected population growth over the 2025–2030 period; net immigration accounts for the rest. Beginning in 2031, annual deaths exceed annual births in CBO’s projections, and net immigration is projected to more than account for the population growth from 2031 to 2055. As a result of the downward revisions to net immigration and fertility rates, the agency now projects that the population will grow more slowly over the next 30 years than the agency projected it would in January. In CBO’s current projections the population will be 4.5 million people smaller (or 1.2%) in 2035 and 5.4 million people smaller (or 1.5%) in 2055 than the population was in the agency’s projections in January.



