Sierra Leone vs Turkmenistan
Sierra Leone has 1.2× the population of Turkmenistan: 8,819,794 vs 7,618,847, a gap of 1.2 million. Sierra Leone is growing faster (+2.04% vs +1.65% a year), adding about 179,588 people a year against +125,375. At these source-year rates the modelled relative population gap is widening. Turkmenistan is the older society: 4.8% aged 65+ against 3.3% in Sierra Leone, while Sierra Leone has more children (37.7% under 15 vs 31.2%). Sierra Leone is 7.5× as densely populated (117.2 vs 15.7 people per km²). People in Turkmenistan live 8.2 years longer on average (70.2 vs 62.0). GDP per capita is 7.7× higher in Turkmenistan ($6,540 vs $846).
Country/territory population bases: World Bank 2025 (Sierra Leone) and 2025 (Turkmenistan); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Sierra Leone vs Turkmenistan — side by side
 Sierra Leone |  Turkmenistan | |
|---|---|---|
| Population | 8,819,7942025 | 7,618,8472025 |
| Growth rate / yr | +2.04%2025 | +1.65%2025 |
| Births per 1,000 | 30.12024 | 20.92024 |
| Deaths per 1,000 | 8.22024 | 5.82024 |
| Children per woman | 3.702024 | 2.662024 |
| Life expectancy | 62.0 yrs2024 | 70.2 yrs2024 |
| Aged 0–14 | 37.7%2025 | 31.2%2025 |
| Aged 65+ | 3.3%2025 | 4.8%2025 |
| Density | 117.2 /km²2023 | 15.7 /km²2023 |
| Area | 72,300 km²2023 | 491,209 km²2023 |
| Urban population | 45.9%2025 | 47.1%2025 |
| Net migration / yr | -11,3092025 | +13,2682025 |
| GDP per capita | $8462025 | $6,5402025 |
| Country population rank (available records) | #100 | #103 |
| Base / world population (World Bank 2025) | 0.11% | 0.09% |
Highlighted cell = the higher value (not "better"). Small print under each value is its own data year. Source: World Bank; country/territory population bases may have different years. These are not live counts.
Population since 1960
World Bank population history (not the separate UN WPP timeline). Sierra Leone: 3.9× from 1960 to 2025; Turkmenistan: 4.6× from 1960 to 2025. Left: absolute population. Right: each series indexed to its own first available year = 100; baseline years may differ.
More comparisons
Regions: Sub-Saharan Africa · Europe & Central Asia · rankings
Sierra Leone: Sierra Leone vs Austria, Sierra Leone vs Switzerland, Sierra Leone vs Belarus, Sierra Leone vs Togo, Sierra Leone vs Laos, Sierra Leone vs Turkmenistan.
Turkmenistan: Turkmenistan vs Sierra Leone, Turkmenistan vs Togo, Turkmenistan vs Laos, Turkmenistan vs Hong Kong, Turkmenistan vs Libya, Turkmenistan vs Kyrgyzstan.
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