Physical geography
Coastal belt of mangrove swamps, wooded hill country, upland plateau, mountains in east.
Sierra Leone is a country in Western Africa. Its capital is Freetown.
Africa and its surrounding islands. The dot marks Freetown; the mapped territory is highlighted in gold.
Natural Earth · locator mapCoastal belt of mangrove swamps, wooded hill country, upland plateau, mountains in east.
Languages used in public life include English.
Western Africa, bordering the North Atlantic Ocean, between Guinea and Liberia.
Three equal horizontal bands of light green (top), white, and light blue
Sources: CIA World Factbook · archived country profile · Bank of Sierra Leone · currency
Sierra Leone became independent from Britain on 27 April 1961 following constitutional negotiations. Freetown’s earlier history includes settlement by formerly enslaved people. A civil war from 1991 to 2002 deeply affected the country.
Sources: CIA World Factbook · archived country profile · Bank of Sierra Leone · currency
Agriculture, mining and services are important activities. Diamonds, iron ore and other minerals contribute to exports. Infrastructure and access to energy remain important development needs.
diamond mining; iron ore, rutile and bauxite mining; small-scale manufacturing (beverages, textiles, footwear)
Sources: CIA World Factbook · archived country profile · Bank of Sierra Leone · currency
Dated World Bank observations. Population uses selected years; real GDP uses all available annual observations.
Population estimates may be revised. Selected years are shown.
Sources: World Bank · Population
| Year | People | Millions of people |
|---|---|---|
| 1970 | 2,712,286 | 2.712 |
| 1980 | 3,272,089 | 3.272 |
| 1990 | 4,196,828 | 4.197 |
| 2000 | 4,423,611 | 4.424 |
| 2010 | 6,222,714 | 6.223 |
| 2020 | 7,912,558 | 7.913 |
| 2025 | 8,819,794 | 8.820 |
Constant prices adjust for inflation. This is total economic output, not current-dollar GDP or income per person. Missing years are left as gaps.
Sources: World Bank · Real GDP
| Year | Constant 2015 US$ | Billions of constant 2015 US dollars |
|---|---|---|
| 1990 | 4,164,341,831 | 4.164 |
| 1991 | 4,262,285,541 | 4.262 |
| 1992 | 3,451,901,036 | 3.452 |
| 1993 | 3,499,349,141 | 3.499 |
| 1994 | 3,431,203,340 | 3.431 |
| 1995 | 3,156,715,557 | 3.157 |
| 1996 | 3,212,078,686 | 3.212 |
| 1997 | 3,023,302,224 | 3.023 |
| 1998 | 3,077,268,543 | 3.077 |
| 1999 | 3,016,360,576 | 3.016 |
| 2000 | 3,217,030,910 | 3.217 |
| 2001 | 3,012,895,641 | 3.013 |
| 2002 | 3,812,040,150 | 3.812 |
| 2003 | 4,173,559,981 | 4.174 |
| 2004 | 4,443,958,500 | 4.444 |
| 2005 | 4,637,426,225 | 4.637 |
| 2006 | 4,836,052,320 | 4.836 |
| 2007 | 5,017,392,581 | 5.017 |
| 2008 | 5,202,336,667 | 5.202 |
| 2009 | 5,281,974,206 | 5.282 |
| 2010 | 5,617,678,842 | 5.618 |
| 2011 | 6,072,747,635 | 6.073 |
| 2012 | 6,715,143,020 | 6.715 |
| 2013 | 7,699,806,186 | 7.700 |
| 2014 | 7,098,065,168 | 7.098 |
| 2015 | 6,788,352,975 | 6.788 |
| 2016 | 7,225,348,889 | 7.225 |
| 2017 | 7,457,128,029 | 7.457 |
| 2018 | 7,672,926,607 | 7.673 |
| 2019 | 8,095,145,458 | 8.095 |
| 2020 | 7,993,685,031 | 7.994 |
| 2021 | 8,465,060,863 | 8.465 |
| 2022 | 8,914,856,495 | 8.915 |
| 2023 | 9,423,896,753 | 9.424 |
| 2024 | 9,828,485,688 | 9.828 |
| 2025 | 10,281,446,270 | 10.281 |
The Human Development Index combines health, education and income. Scores range from 0 to 1.
The latest values refer to 2023. All historical scores use the same report edition. HDI does not describe every aspect of inequality or quality of life.
Sources: UNDP · Human Development Report 2025
Presidential republic. Parliament has one chamber (a unicameral legislature). The president holds executive responsibilities; the legislature makes national laws.
Sources: CIA World Factbook · archived country profile · Bank of Sierra Leone · currency
Three questions about Sierra Leone.
Sources: CIA World Factbook · archived country profile · Bank of Sierra Leone · currency
Prepared 24 September 2026. World Bank series: SP.POP.TOTL (persons) and NY.GDP.MKTP.KD (constant 2015 US dollars); downloaded 24 September 2026, provider update 13 July 2026. UNDP values use the 2025 report and 2023 observation year. These are dated statistical snapshots, not live population or economic counters.
Maps use Natural Earth geographic data. Background geography, flag descriptions and selected historical facts use archived public-domain CIA World Factbook profiles, supplemented by the sources linked above. The Factbook is no longer updated; dated statistics here come from the separately named providers.