Age composition in 2026:
| Sri Lanka | Costa Rica | |
|---|---|---|
| Young Population | 21.39%4,993,550 | 17.83%922,831 |
| Working Age Population | 65.77%15,357,162 | 68.87%3,563,963 |
| Elderly Population | 12.84%2,997,602 | 13.29%687,987 |
In 2026, the median age is 34.6 years in Sri Lanka and 36.7 years in Costa Rica.Costa Rica already reached Sri Lankaโs current median age in 2023, about 3 years ahead in population aging.
The total population of Sri Lanka peaks in 2051 at 24,814,756.The total population of Costa Rica peaks in 2044 at 5,381,723.
By 2050, the dependency ratio of Sri Lanka will be 60.3%, and 20.29% of the population will be elderly.By 2050, the dependency ratio of Costa Rica will be 61.0%, and 25.28% of the population will be elderly.
| Sri Lanka | Costa Rica | ||
|---|---|---|---|
| Demographic dividend (dependency ratio below 50%) | 2000โ2012 | 2007โ2039 | |
| Aging society (65+ reaches 7%) | 1950 or earlier | 2009 | |
| Aged society (65+ reaches 14%) | 2030 2 years later | 2028 | |
| Super-aged society (65+ reaches 20%) | 2049 9 years later | 2040 |