Nigeria vs Sierra Leone: Age dependency ratio, old
Nigeria
5.4%
in 2025
Sierra Leone
5.6%
in 2025
Nigeria rank
193rd
Sierra Leone rank
190th
Age dependency ratio, old over time
- Nigeria
- Sierra Leone
How they compare
Sierra Leone currently reports 5.6% against 5.4% in Nigeria, a difference of 0.2%.
Across all 66 years both countries report, Sierra Leone has been ahead every year.
Nigeria ranks 193rd and Sierra Leone ranks 190th of 218 countries.
Sierra Leone has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | Nigeria | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 6.1% | 7.0% | 0.9% | Sierra Leone |
| 1970s | 6.0% | 7.6% | 1.6% | Sierra Leone |
| 1980s | 6.1% | 7.6% | 1.5% | Sierra Leone |
| 1990s | 5.9% | 7.1% | 1.2% | Sierra Leone |
| 2000s | 5.7% | 6.4% | 0.7% | Sierra Leone |
| 2010s | 5.6% | 5.8% | 0.2% | Sierra Leone |
| 2020s | 5.5% | 5.5% | 0.0% | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher age dependency ratio, old, Nigeria or Sierra Leone?
- Sierra Leone, at 5.6% against 5.4% in Nigeria as of 2025.
- What is the difference in age dependency ratio, old between Nigeria and Sierra Leone?
- 0.2%, with Sierra Leone ahead.
- How many years of comparable data are there for Nigeria and Sierra Leone?
- 66 years are reported by both, from 1960 to 2025.
- How do Nigeria and Sierra Leone rank globally for age dependency ratio, old?
- Nigeria ranks 193rd and Sierra Leone ranks 190th of 218 countries.
- Where does this data come from?
- World Population Prospects, United Nations (UN), publisher: UN Population Division, published as Age dependency ratio, old (% of working-age population). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Age dependency ratio, old, is the ratio of older dependents--people older than 64--to the working-age population--those ages 15-64. Data are shown as the proportion of dependents per 100 working-age population.