Compare countries
Mauritania
5,479,919
Population nowvs
Sierra Leone
9,520,602
Population nowAs of 2026, Mauritania has a population of about 5,479,919 while Sierra Leone has about 9,520,602 — a difference of 4,040,683 people. Sierra Leone is growing faster (2.7% per year).
| Mauritania | Metric | Sierra Leone |
|---|---|---|
| 2.7% | Growth rate / yr | 2.7% |
| 36.0 | Birth rate / 1,000 | 36.0 |
| 9.0 | Death rate / 1,000 | 9.0 |
| 5.3 | Density / km² | 132.7 |
| 50.2% | Male % | 50.2% |
| 55.0% | Literacy % | 55.0% |
| 8.0% | Smoking % | 8.0% |
| 50.8 | Life expectancy | 45.3 |