A side-by-side look at Nigeria and Sierra Leone. Fertility is 4.38 births per woman in Nigeria (2024) versus 3.70 in Sierra Leone (2024). Population stands at 237.5M (2025) and 8.8M (2025) respectively. GDP per capita at purchasing-power parity is $8.1K versus $3.2K.
| Indicator | Nigeria | Sierra Leone |
|---|---|---|
| Fertility rate | 4.38#15 | 3.70#35 |
| Population | 237.5M | 8.8M |
| GDP / capita (PPP) | $8.1K | $3.2K |
Topic pages: Nigeria fertility · Sierra Leone fertility · Nigeria population · Sierra Leone population
Have a correction, a better estimate, or additional data—at the global, national, regional, or city level? Help improve the data
Most recent observation for each selected country, ranked high to low.
| # | Country | Value | Year |
|---|---|---|---|
| Add countries to compare. | |||
birthrate.io, "Nigeria vs Sierra Leone". https://www.birthrate.io/compare/nigeria/sierra-leone (accessed 7 September 2026). Underlying data: World Bank; UN.
Please cite the original statistical agency for the underlying figures. Charts and tables on this page may be reused with attribution.