Sogn is a traditional district in Western Norway (Vestlandet). It is located in the county of Sogn og Fjordane, surrounding the Sognefjorden, the largest/longest fjord in Norway. The district of Sogn consists of the municipalities of Aurland, Balestrand, Hyllestad, Høyanger, Gulen, Leikanger, Luster, Lærdal, Sogndal, Solund, Vik, and Årdal. The district covers 10,675 square kilometres (4,122 sq mi) and contains about 35% of the county's population.