De Wulf arranged population figures to make a set of familiar aging visualizations called population pyramids. We chose 15 countries and show you the transition from 2000 to 2100 in 10-year intervals.

The replacement rate--the reproduction rate that keeps a population stable--for developed countries is 2.1, yet nearly half the world’s population has birth rates lower than that.

This is about 17% of the world population today and will be about 50% of the world population by 2050. China, Mexico, Thailand and Turkey will join the developed countries by 2030. The developed ...

The US is also going to continue aging, though to a less extreme extent than other developed countries. The median age in 2060 is projected to be about 43, as opposed to being about 37 in 2014.

Population will rise in a country with a TFR above 2.1 and fall with a TFR below 2.1. In 2020 Niger had the world’s highest TFR, at 6.89. South Korea had the lowest, at 0.89.

The world’s population will top 7 billion next year, while the ratio of working age adults to the elderly will decline precipitously in developed countries. Skip to content Skip to site index.

China eased birth limits in 2021 to cope with the rapid rise in the average age of its population ANDY WONG / AP. I n November 2022, the human population will pass the 8 billion mark. This is one ...