Gotland County is a county or län of Sweden. Gotland is located in the Baltic Sea to the east of Öland, and is the largest of Sweden's islands. Counties are usually sub-divided into municipalities, but Gotland County consists of only one county council, which also serves as a municipality, Region Gotland. Gotland County is the only county in Sweden that is …Gotland County is a county or län of Sweden. Gotland is located in the Baltic Sea to the east of Öland, and is the largest of Sweden's islands. Counties are usually sub-divided into municipalities, but Gotland County consists of only one county council, which also serves as a municipality, Region Gotland. Gotland County is the only county in Sweden that is not governed by a municipal council. The municipality handles the tasks that are otherwise handled by the county council: mainly health care and public transport. Like other counties, Gotland has a County Administrative Board, which oversees implementation of the Swedish state government. Both the County Administrative Board and the municipality have their seat in the largest city, Visby, with over 22,000 inhabitants. Princess Leonore, the daughter of Princess Madeleine, is Duchess of Gotland.