Falun is a city and the seat of Falun Municipality in Dalarna County, Sweden, with 37,291 inhabitants in 2010. It is also the capital of Dalarna County. Falun forms, together with Borlänge, a metropolitan area with just over 100,000 inhabitants. Falun was originally famous for its copper mine, and is today an important service and industrial city even though the mine is closed. Faluån is a river, flowing through the city, separating it into two sides.