Östersund is an urban area (city) in Jämtland in the middle of Sweden. It is the seat of Östersund Municipality and the capital of Jämtland County. Östersund is located at the shores of Sweden's fifth largest lake, Storsjön, opposite the island Frösön, and is the only city in Jämtland. Östersund is the region's cultural and economical centre and by tradition a city of trade and commerce. Östersund had one of the most extensive garrisons in Sweden prior to its closure in the early 21st century. The city is the Mid Sweden University's largest campus site with approximately 7,000 students. With a total population of 44,327 (2010) Östersund is the 24th most populous city in Sweden, the 46th most populous city in Scandinavia, and by far the largest inland city in Northern Sweden.