Hinnøya is the fourth-largest island in Norway – and the largest off the mainland – covering an area of 2,204.7 square kilometres (851.2 sq mi). It is located on the west coast of the country, in Northern Norway. The western part of the island is in the district of Vesterålen, the southwestern part is in Lofoten, the southeastern part is in Ofoten and the northeastern part is in Southern Troms. In 2001, Hinnøya was Norway's most populated island.