Mauritania vs Sierra Leone: Population
Mauritania
17.12 million people
in 2100
Sierra Leone
15.93 million people
in 2100
Mauritania rank
85th
Sierra Leone rank
87th
Population over time
- Mauritania
- Sierra Leone
How they compare
Mauritania currently reports 17.12 million people against 15.93 million people in Sierra Leone, a difference of 1.18 million people.
That makes Mauritania's figure about 1.1 times Sierra Leone's.
The two have swapped places 1 time across 77 shared years of data; in 2024 it was Sierra Leone ahead.
Mauritania ranks 85th and Sierra Leone ranks 87th of 236 countries.
Across the 9 decades both report, Mauritania averaged higher in 2 and Sierra Leone in 7.
Head to head by decade
| Decade | Mauritania | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 2020s | 5.54 million people | 9.08 million people | 3.55 million people | Sierra Leone |
| 2030s | 6.78 million people | 10.47 million people | 3.69 million people | Sierra Leone |
| 2040s | 8.46 million people | 12.12 million people | 3.66 million people | Sierra Leone |
| 2050s | 10.21 million people | 13.55 million people | 3.34 million people | Sierra Leone |
| 2060s | 11.96 million people | 14.68 million people | 2.71 million people | Sierra Leone |
| 2070s | 13.65 million people | 15.47 million people | 1.82 million people | Sierra Leone |
| 2080s | 15.18 million people | 15.89 million people | 711,370 people | Sierra Leone |
| 2090s | 16.49 million people | 15.99 million people | 500,400 people | Mauritania |
| 2100s | 17.12 million people | 15.93 million people | 1.18 million people | Mauritania |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher population, Mauritania or Sierra Leone?
- Mauritania, at 17.12 million people against 15.93 million people in Sierra Leone as of 2100.
- What is the difference in population between Mauritania and Sierra Leone?
- 1.18 million people, with Mauritania ahead.
- How many years of comparable data are there for Mauritania and Sierra Leone?
- 77 years are reported by both, from 2024 to 2100.
- How do Mauritania and Sierra Leone rank globally for population?
- Mauritania ranks 85th and Sierra Leone ranks 87th of 236 countries.
- Where does this data come from?
- UN WPP (2024) – with major processing by Our World in Data, published as Population. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Population by country, available from 10,000 BCE to 2023, based on data and estimates from different sources.