 The table below breaks out the UN’s future population growth predictions by region

Between 2020 and the end of this century, the UN predicts that all six regions will experience  declines in population growth, that by the end of the century three of them will be experiencing population decline, and the world will have reached zero population growth.The median scenario of the UN 2019 World Population Prospects predicts the following populations per region in 2050 (compared to population in 2000), in billions