The top 10 countries with the oldest populations in the world are all high-income countries, including Japan and Italy, according to data from the World Bank. United Nations.
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- Top 10 countries with the youngest population in the world
- Top 10 most populous countries in the world
- Top 10 most densely populated countries in the world
- Top 10 most sparsely populated countries in the world
- Top 10 countries with the highest life expectancy in the world
- Top 10 fastest growing population countries in the world
- Top 10 countries with the fastest population decline in the world
Top 10 countries with the oldest population in the world
| Class | Country / Territory | Population in 2024 | Average age | Average life expectancy |
| 1 | Holy See (Vatican) | 496 | 58,7 | 83,1 |
| 2 | Monaco | 38.631 | 54,0 | 86,5 |
| 3 | Saint Helena | 5.237 | 50,7 | 77,0 |
| 4 | Japanese | 123.753.041 | 49,4 | 84,9 |
| 5 | Martinique | 343.195 | 49,3 | 82,7 |
| 6 | San Marino | 33.581 | 48,0 | 85,8 |
| 7 | Italy | 59.342.867 | 47,8 | 83,9 |
| 8 | Guadeloupe | 375.106 | 46,9 | 82,2 |
| 9 | Saint Pierre and Miquelon | 5.628 | 46,8 | 76,9 |
| 10 | China, Hong Kong SAR | 7.414.909 | 46,8 | 85,6 |
#1. Holy See (Vatican): 58,7
Holy See (Vatican) is the center of the Roman Catholic Church and a sovereign state located entirely within the city of Rome, Italy.
It is the country with the oldest population in the world with an average age of 58,7. The average life expectancy of citizens of the Holy See is 83,1.
Holy See It is also the smallest country in the world (44ha) and has the world's least populous with 496 people in 2024.

#2. Monaco: 54,0
Monaco has the second oldest population in the world with a median age of 54. It is also the country with the longest life expectancy in the world with a median life expectancy of 86,5.
Also among the smallest countries in the world with an area of only 1,49 km2, but a population of 38.631 people, Monaco is the country with the most most densely populated in the world in 2024.
#3. Saint Helena: 50,7
Saint Helena is a remote volcanic island in the South Atlantic Ocean, an overseas territory of the United Kingdom. According to the latest estimates, the population of Saint Helena on 27 December 12 is approximately 2024.
The area of the island is 122 km², resulting in population density about 13 people per km². About 32,9% of the population lives in urban areas, with the capital being Jamestown.
Saint Helena's population has a median age of 50,7 and a life expectancy of 77 – the lowest among the 10 countries with the oldest populations in the world.
Saint Helena is known as one of the most remote places in the world, famous for being the place of exile of Emperor Napoleon Bonaparte from 1815 until his death in 1821.
#4. Japan: 49,4
Japan has the second oldest population in the world with a median age of 49,4. This is most populous country among the Top 10 countries with the oldest population in the world with nearly 124 million people.
Japan is also on the list. Top 10 countries with the highest average life expectancy in the world with position number 4 and average life expectancy of 84,4.
#5. Martinique: 49,3
Martinique is an island in the Caribbean Sea, an overseas territory of France.
The island has an area of about 1.128 km² and the population as of July 1, 7 is 2024 people.
The average age of Martinique residents is 49,3 and the average life expectancy is 82,7.
#6. San Marino: 48,0
San Marino is a small country located on the Italian peninsula, known for its modest size and small population.
San Marino has an area of about 61 km², is one of the smallest countries in the world.
San Marino's population in 2024 is 33.581, with a median age of 48 and a life expectancy of 85,8 – Second highest in the world.
#7. Italy: 47,8
Italy is the second most populous country among the Top 10 countries with the oldest population in the world with 59.342.867 people in 2024.
Italians have an average life expectancy of 83,9 and a median age of 47,8.
#8. Guadeloupe: 46,9
Guadeloupe is an overseas department of France located in the Caribbean Sea, with an area of approximately 1.628 km².
The median age of Guadeloupe residents is 46,9 years and life expectancy is 82,2. The population of Guadeloupe in 2024 is 375.106.
#9. Saint Pierre and Miquelon: 46,8
Saint-Pierre and Miquelon is a small archipelago located in the North Atlantic Ocean, off the coast of Newfoundland, Canada, and is an overseas territory of France.
The archipelago covers an area of 242 square kilometers and has a population of just 2. The island nation's median age is 5.628 and its life expectancy is 46,8.
#10. Hong Kong: 46,8
China's special administrative region is the last unit to make the Top 10 countries/territories with the oldest population in the world with an average age of 46,8.
Hong Kong's population has an average life expectancy of 85,6, the third highest in the world.
With a population of 7.414.909 in 2024 and an area of 6.747 km2, Hong Kong ranks third in the world in terms of population density.
Do you know?
- Top 10 most populous countries in the world
- Top 10 most densely populated countries in the world
- Top 10 most sparsely populated countries in the world
- Top 10 countries with the highest life expectancy in the world
- Top 10 fastest growing population countries in the world
- Top 10 countries with the youngest population in the world