Official nameRepublika Bulgaria (Republic of Bulgaria)CapitalSofiaPopulation estimate (2015)7·15 millionInternet domain extension.bgCurrencyThe unit of currency is the lev (BGN), which consists of 100 stotinki.TerritoryBulgaria is bounded in the north by Romania, east by the Black Sea, south by Turkey and Greece, and west by Serbia and the Republic of Macedonia.LanguageBulgarian is the official language.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words