Age composition in 2026:
| Mongolia | South Korea | |
|---|---|---|
| Young Population | 30.87%1,098,127 | 9.82%5,065,881 |
| Working Age Population | 63.39%2,254,496 | 68.75%35,474,901 |
| Elderly Population | 5.74%204,173 | 21.43%11,059,607 |
In 2026, the median age is 28.0 years in Mongolia and 47.2 years in South Korea.South Korea already reached Mongoliaโs current median age in 1993, about 33 years ahead in population aging.
The total population of Mongolia is projected to keep growing until 2100, reaching 5,519,346.The total population of South Korea peaks in 2020 at 51,858,481.
By 2050, the dependency ratio of Mongolia will be 55.9%, and 12.57% of the population will be elderly.By 2050, the dependency ratio of South Korea will be 90.5%, and 39.68% of the population will be elderly.
| Mongolia | South Korea | ||
|---|---|---|---|
| Demographic dividend (dependency ratio below 50%) | 2006โ2014 2032โ2041 |
1987โ2029 | |
| Aging society (65+ reaches 7%) | 2030 30 years later | 2000 | |
| Aged society (65+ reaches 14%) | 2055 37 years later | 2018 | |
| Super-aged society (65+ reaches 20%) | 2083 58 years later | 2025 |