
Data source: Median Age – Our World in Data
Tools used: Matplotlib
Explanations:
- Japan has one of the world’s oldest populations due to decades of low birth rates and long life expectancy, but they also lost a large part of their adult population during World War II
- The Central African Republic have a young population, driven by high birth rates and lower life expectancy. Armed conflict and instability reduced the median age significantly since 2010.
I removed countries with a population below 100,000 since they often have strange demographics that don’t follow a natural trend, such as Vatican City and Monaco who both have abnormally high median ages.
Full article: https://datacanvas.substack.com/p/median-age-and-aging-nations
Posted by oscarleo0
![[OC] Median Age Extremes: Japan and the Central African Republic Have the Oldest and Youngest Populations — But They Shared the Same Median Age in 1950 [OC] Median Age Extremes: Japan and the Central African Republic Have the Oldest and Youngest Populations — But They Shared the Same Median Age in 1950](https://www.byteseu.com/wp-content/uploads/2025/07/lproffz7igbf1-1536x1536.png)
4 Comments
Imagine being 14 and half of your country being younger than you.
Really cool to look at
Who was “highest” and “lowest” in 1950? and where did they end up?
I’d like to see this with the country lines color coded by continent.
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