Half of Niger is under 15 years old. Half of Japan is over 49. The gap reshapes economies, politics, and pension systems.
How to Play: Guess if the country on the right has a HIGHER or LOWER median age than the one on the left.
Name A
Name B
Top 10 Oldest Countries by Median Age
Median age splits a population so half is older and half is younger. It is one of the most predictive demographics for economic growth, pension liabilities, and political behavior.
| # | Name | Median Age (years) | Unit |
|---|---|---|---|
| 1 | Monaco | 56 | years |
| 2 | Japan | 49 | years |
| 3 | Italy | 48 | years |
| 4 | Germany | 47 | years |
| 5 | Hong Kong | 46 | years |
| 6 | Portugal | 46 | years |
| 7 | Greece | 46 | years |
| 8 | Bulgaria | 45 | years |
| 9 | Slovenia | 45 | years |
| 10 | South Korea | 44 | years |
Why Median Age Matters
Median age is more informative than ‘average age’ because it is not skewed by long-lived outliers. UN demographers use it to forecast labor force size, pension burdens, and political dynamics.
Japan’s median age of 49 is the highest of any large country. By 2050 it is projected to exceed 53. Italy, Germany, and South Korea face similar trajectories. The economic consequences include shrinking workforce, growing pension liabilities, and rising healthcare costs as a share of GDP.
Niger’s median age of 15 means more than half the country is school-age or younger. Combined with high birth rates, this ‘youth bulge’ creates both opportunity (potential demographic dividend if jobs materialize) and risk (high unemployment, political instability).
Frequently Asked Questions
Which country is the youngest?
Niger at median age 15 — more than half the population is school-age or younger.
Which is the oldest?
Monaco (56) followed by Japan (49). Most aging populations are in East Asia and Europe.
How does this affect the economy?
Young populations need jobs and infrastructure; older populations need pensions and healthcare. The mix shapes long-term policy.
Will the world keep aging?
Yes — global median age is projected to rise from 30 today to about 38 by 2050. Africa will keep getting younger relative to other regions.
Note: Median age in years per UN World Population Prospects 2024.
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