Estonia, officially the Republic of Estonia, is a country in the Baltic region of Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the Baltic Sea across from Sweden, to the south by Latvia, and to the east by Russia. The territory of Estonia consists of the mainland, the larger islands of Saaremaa and Hiiumaa, and over 2,300 other islands and islets on the east coast of the Baltic Sea. Its capital city of Tallinn, along with the city of Tartu, are the country's two largest urban areas. The Estonian language, of the Finnic family, is the official language and the first language of the majority of nearly 1.4 million people. Estonia is one of the least populous member states of the European Union.