2023年12月3日 · About Romania. The Facts: Capital: Bucharest. Area: 92,046 sq mi (238,397 sq km). Population: ~ 19,300,000. Largest cities: Bucharest, Timișoara, Iași, Constanța, Craiova, Brașov, Galați, Ploiești, Oradea, Brăila. Official language: Romanian. Currency: Romanian Leu (RON). Last Updated: December 03, 2023.