Age composition in 2026:
| Guinea-Bissau | Nigeria | |
|---|---|---|
| Young Population | 37.85%869,676 | 40.02%97,010,304 |
| Working Age Population | 58.87%1,352,783 | 56.89%137,925,646 |
| Elderly Population | 3.28%75,355 | 3.09%7,495,885 |
In 2026, the median age is 20.6 years in Guinea-Bissau and 19.4 years in Nigeria.Guinea-Bissau already reached Nigeriaโs current median age in 1950, about 76 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 Nigeria is projected to keep growing until 2100, reaching 476,747,779.
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 Nigeria will be 54.9%, and 4.54% of the population will be elderly.
| Guinea-Bissau | Nigeria | ||
|---|---|---|---|
| Demographic dividend (dependency ratio below 50%) | 2065โ2073 | 2058โ2100 | |
| Aging society (65+ reaches 7%) | 2059 | 2073 14 years later | |
| Aged society (65+ reaches 14%) | 2093 | Not reached by 2100 | |
| Super-aged society (65+ reaches 20%) | Not reached by 2100 | Not reached by 2100 |