As people around the world live longer and birth rates go down in many countries, some nations now have much older populations. One way to understand this is by looking at the median age, which shows the middle age of the population. In this article, we will explore the top-10 countries with the oldest populations based on median age and learn why their people are growing older.
The median age is the age that splits a population into two equal parts:
This number helps us understand whether a country has more young people or more older adults.
To find the median age:
These are the countries with the highest median age in the world:
| Rank | Country | Median Age |
| 1. | Monaco | 56.9 years |
| 2. | Japan | 49.9 years |
| 3. | Andorra | 48.8 years |
| 4. | Italy | 48.4 years |
| 5. | Hong Kong | 47.2 years |
| 6. | Germany | 46.8 years |
| 7. | Spain | 46.8 years |
| 8. | Greece | 46.5 years |
| 9. | Portugal | 46.4 years |
| 10. | Slovenia | 46.3 years |
There are several reasons:
These things combined make the average age go up over time.
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