Many posts have discussed population and immigration.
CBO, The Demographic Outlook: 2025 to 2055
The size of the U.S. population and its composition by age and sex have significant implications for the economy and the federal budget. In CBO’s projections, the U.S. population increases from 350 million people in 2025 to 372 million in 2055. The rate of population growth generally slows over the next 30 years, from an average of 0.4 percent a year between 2025 and 2035 to an average of 0.1 percent a year between 2036 and 2055. Net immigration becomes an increasingly important source of population growth. Without immigration, the population would shrink beginning in 2033, in part because fertility rates are projected to remain too low for a generation to replace itself.
