Kaliningrad Oblast, Oblast And Federal Subject In The North-West Of Russia, Forming An Exclaved Land Area Bordering The Baltic Sea

Kaliningrad Oblast (Russian: Калинингра́дская о́бласть, romanized: Kaliningradskaya oblast') is the westernmost federal subject of Russia. It is a semi-exclave, and is situated on the Baltic Sea. The oblast's largest city and administrative centre is the city of Kaliningrad, formerly known as Königsberg. Its port city of Baltiysk is Russia's only port on the Baltic Sea that remains ice-free in winter. Kaliningrad Oblast had a population of roughly 1 million in the Russian Census of 2010.The oblast is bordered by Poland to the south, Lithuania to the north and east, and the Baltic Sea to the west. It is impossible to travel overland between the oblast and the main contiguous portion of Russia without passing through at least two other countries. The territory was formerly the northern part of the Prussian province of East Prussia, the southern part of which is today part of the Warmian-Masurian Voivodeship in Poland. With the defeat of Nazi Germany in World War II, the territory was annexed as part of the Russian SFSR by the Soviet Union. Following the post-war migration and flight and expulsion of Germans, the territory was populated with mostly Russians. According to the 2010 census, there were fewer than 7,000 Germans and 3,000 to 25,000 Poles.