German mediatization
Wertach was first mentioned in 955 and received in 1423 the town privileges. The market Wertach belonged to the Prince-Bishopric of Augsburg. Since the German mediatization and the secularization of 1803 the place belongs to Bavaria. As part of the administrative reforms in the Kingdom of Bavaria and the Gemeindeedikt of 1818 the today municipality was formed. In 1893 the place burned down to a few houses.