 On January 1, 1975, Dornstetten was merged with Aach and Hallwangen to make up the municipality of Dornstetten, as part of Baden-Württemberg's major communal reforms in the early 1970s.Since the time of the Reformation, Dornstetten has been heavily Protestant.A Roman Catholic church is in the town, but Catholics in Dornstetten technically belong to the parochial community of Freudenstadt.