Kaliningrad Oblast (, "Kaliningradskaya Oblast"), often referred to as the Kaliningrad Region in English, or simply Kaliningrad, is a federal subject and semi-exclave of Russia located on the coast of the Baltic Sea. Its constitutional status is equal to each of the other 85 federal subjects. Its administrative centre is the city of Kaliningrad, formerly known as Königsberg. The port of Baltiysk is the only Baltic port in the Russian Federation that remains ice-free in winter. According to the 2010 census, the oblast had a population of 941,873.