Nigeria vs Sierra Leone: Replacement-level fertility rate
Nigeria
2.71
in 2010
Sierra Leone
2.66
in 2010
Nigeria rank
1st
Sierra Leone rank
4th
Replacement-level fertility rate over time
- Nigeria
- Sierra Leone
How they compare
Nigeria currently reports 2.71 against 2.66 in Sierra Leone, a difference of 0.05.
The two have swapped places 1 time across 7 shared years of data; in 1950 it was Sierra Leone ahead.
Nigeria ranks 1st and Sierra Leone ranks 4th of 199 countries.
Across the 7 decades both report, Nigeria averaged higher in 1 and Sierra Leone in 6.
Head to head by decade
| Decade | Nigeria | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1950s | 3.88 | 4.3 | 0.42 | Sierra Leone |
| 1960s | 3.51 | 4.07 | 0.56 | Sierra Leone |
| 1970s | 3.24 | 3.6 | 0.36 | Sierra Leone |
| 1980s | 3.01 | 3.26 | 0.25 | Sierra Leone |
| 1990s | 3.02 | 3.62 | 0.6 | Sierra Leone |
| 2000s | 2.95 | 3.13 | 0.18 | Sierra Leone |
| 2010s | 2.71 | 2.66 | 0.05 | Nigeria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher replacement-level fertility rate, Nigeria or Sierra Leone?
- Nigeria, at 2.71 against 2.66 in Sierra Leone as of 2010.
- What is the difference in replacement-level fertility rate between Nigeria and Sierra Leone?
- 0.05, with Nigeria ahead.
- How many years of comparable data are there for Nigeria and Sierra Leone?
- 7 years are reported by both, from 1950 to 2010.
- How do Nigeria and Sierra Leone rank globally for replacement-level fertility rate?
- Nigeria ranks 1st and Sierra Leone ranks 4th of 199 countries.
- Where does this data come from?
- Gietel-Basten and Scherbov (2020) – processed by Our World in Data, published as Replacement-level fertility rate. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
The replacement-level fertility rate (the total fertility rate needed to keep the population size stable over time, without migration) is commonly stated to be 2.1. But the level can vary based on the sex ratio, child mortality rates, and other factors.