List of countries by future population (United Nations, constant fertility variant)

This is a List of countries by future population using the constant fertility rate variant (CFR; in which it is assumed that current fertility rates stay the same each year), ranging from 2020 to 2100 in decades or ten-year periods, as estimated by the 2015 revision of the World Population Prospects database by the United Nations Population Division. All figures are rounded and given in thousands, but these projections are not expected to be accurate since for most countries the fertility rate has been gradually decaying over time.