Age composition in 2026:
| Guinea-Bissau | Sierra Leone | |
|---|---|---|
| Young Population | 37.85%869,676 | 37.21%3,347,406 |
| Working Age Population | 58.87%1,352,783 | 59.46%5,349,766 |
| Elderly Population | 3.28%75,355 | 3.33%299,577 |
In 2026, the median age is 20.6 years in Guinea-Bissau and 20.9 years in Sierra Leone.Sierra Leone already reached Guinea-Bissauโs current median age in 1952, about 74 years ahead in population aging.
The total population of Guinea-Bissau is projected to keep growing until 2100, reaching 4,665,487.The total population of Sierra Leone peaks in 2092 at 16,009,634.
By 2050, the dependency ratio of Guinea-Bissau will be 53.3%, and 5.68% of the population will be elderly.By 2050, the dependency ratio of Sierra Leone will be 50.8%, and 5.50% of the population will be elderly.
| Guinea-Bissau | Sierra Leone | ||
|---|---|---|---|
| Demographic dividend (dependency ratio below 50%) | 2065โ2073 | 2053โ2085 | |
| Aging society (65+ reaches 7%) | 2059 | 2060 1 years later | |
| Aged society (65+ reaches 14%) | 2093 1 years later | 2092 | |
| Super-aged society (65+ reaches 20%) | Not reached by 2100 | Not reached by 2100 |