Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of northern-eastern Europe. One of the three Baltic states, it is situated along the southeastern shore of the Baltic Sea, to the east of Sweden and Denmark. It is bordered by Latvia to the north, Belarus to the east and south, Poland to the south, and Kaliningrad Oblast (a Russian exclave) to the southwest. Lithuania has an estimated population of 2.8 million people as of 2017, and its capital and largest city is Vilnius. Other major cities are Kaunas and Klaipėda. Lithuanians are a Baltic people, the official language, Lithuanian, along with Latvian, is one of only two living languages in the Baltic branch of the Indo-European language family.