 Ossingen has an area of .Of this area, 57.9% is used for agricultural purposes, 30% is forested, 7.9% is settled (buildings or roads) and the remainder (4.2%) is non-productive (rivers, glaciers or mountains).The municipality includes the village of Ossingen, the hamlets of Weiler Burghof, Gisenhard, Hausen and Langenmoos, the farming settlements of Werdhof, Ziegelhütte and Dachsenhausen as well as Schloss Wyden (Widen Castle).