Where Data Tells the Story
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This graphic shows the world’s oldest and youngest countries by median age, per 2024 estimates from the CIA World Factbook.
The median age is a single indicator of the age distribution of a population—where half the population is older and half is younger than the listed age.
Monaco and Japan—two countries with high life expectancies and low birth rates—have some of the highest median ages (50+) in the world, indicating that the population as a whole is rapidly aging.
Conversely, many countries in Africa have lower life expectancies and higher birth rates, which results in the opposite phenomenon of low median ages.