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Sierra Leone 2015 Population and Housing Census Thematic Report on Children, Adolescents and Youth

The population of Sierra Leone grew by 3.2 percent between 2004 and 2015 from about 5 to 7 million people. The majority of the population is young, with eight out of ten people being under 35 years old. About 41 per cent are under the age of 15 and 62.5 per cent are under 25 years old.