Age composition in 2026:
๐ธ๐ฑ Sierra Leone
๐ณ๐ฌ Nigeria
| Sierra Leone | Nigeria | |
|---|---|---|
| Young Population | 37.21%3,347,406 | 40.02%97,010,304 |
| Working Age Population | 59.46%5,349,766 | 56.89%137,925,646 |
| Elderly Population | 3.33%299,577 | 3.09%7,495,885 |
In 2026, the median age is 20.9 years in Sierra Leone and 19.4 years in Nigeria.Sierra Leone already reached Nigeriaโs current median age in 1950, about 76 years ahead in population aging.
The total population of Sierra Leone peaks in 2092 at 16,009,634.The total population of Nigeria is projected to keep growing until 2100, reaching 476,747,779.
By 2050, the dependency ratio of Sierra Leone will be 50.8%, and 5.50% of the population will be elderly.By 2050, the dependency ratio of Nigeria will be 54.9%, and 4.54% of the population will be elderly.
| Sierra Leone | Nigeria | ||
|---|---|---|---|
| Demographic dividend (dependency ratio below 50%) | 2053โ2085 | 2058โ2100 | |
| Aging society (65+ reaches 7%) | 2060 | 2073 13 years later | |
| Aged society (65+ reaches 14%) | 2092 | Not reached by 2100 | |
| Super-aged society (65+ reaches 20%) | Not reached by 2100 | Not reached by 2100 |