Stockach is a town in the district of Konstanz, in southern Baden-Württemberg, Germany. It is situated in the Hegau region, about 5 k…Stockach is a town in the district of Konstanz, in southern Baden-Württemberg, Germany. It is situated in the Hegau region, about 5 km northwest of Lake Constance, 13 km north of Radolfzell and 25 km northwest of Konstanz.