Official nameRepublic of LiberiaCapitalMonroviaPopulation estimate (2015)4·50 millionInternet domain extension.lrCurrencyUS currency is legal tender.TerritoryLiberia is bounded in the north-west by Sierra Leone, north by Guinea, east by Côte d'Ivoire and south-west by the Atlantic ocean.LanguagesEnglish is the official language spoken by 20% of the population. The rest belong in the main to three linguistic groups: Mande, West Atlantic and the Kwa.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words