Svetogorsk (Russian: Светогорск, Finnish: Enso) is an industrial town in Vyborgsky District of Leningrad Oblast, Russia, located on the Karelian Isthmus, on the Vuoksi River. It is located one kilometre (0.62 mi) from the border with Finland, five kilometres (3.1 mi) from the Finnish town of Imatra, and 207 kilometers (129 mi) from St. Petersburg. Population: 15,981 (2010 census); 15,698 (2002 census); 15,594 (1989 Soviet census).