The U.S. population size is also not declining. Currently, despite fertility below the replacement level of 2.1 children per woman, there are still more births than deaths. The U.S. population is ...

Japan's fertility rate also declined, falling to 1.15 expected births per woman—down from 1.2 in 2023. A rate of 2.1 is widely considered the replacement threshold for a stable population ...

Despite falling birth rates, India still has one of the youngest populations in the world – nearly a quarter of its citizens are under 14 and two-thirds are of working age.