Age composition in 2026:
| Guinea | Nigeria | |
|---|---|---|
| Young Population | 40.19%6,206,221 | 40.02%97,010,304 |
| Working Age Population | 56.31%8,696,117 | 56.89%137,925,646 |
| Elderly Population | 3.49%539,653 | 3.09%7,495,885 |
In 2026, the median age is 19.5 years in Guinea and 19.4 years in Nigeria.Guinea already reached Nigeriaโs current median age in 1950, about 76 years ahead in population aging.
The total population of Guinea is projected to keep growing until 2100, reaching 32,007,045.The total population of Nigeria is projected to keep growing until 2100, reaching 476,747,779.
By 2050, the dependency ratio of Guinea will be 55.0%, and 4.62% 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 | Nigeria | ||
|---|---|---|---|
| Demographic dividend (dependency ratio below 50%) | None between 1950 and 2100 | 2058โ2100 | |
| Aging society (65+ reaches 7%) | 2063 | 2073 10 years later | |
| Aged society (65+ reaches 14%) | 2100 | Not reached by 2100 | |
| Super-aged society (65+ reaches 20%) | Not reached by 2100 | Not reached by 2100 |