 It is physically located in the foothills of the Black Forest, in the Heckengäu, a region geology is characterized by karstified and wooded muschelkalk hills.Because the Heckengäu is home to a number of protected species of fauna, Heimsheim borders the , , , and Federal nature reserves.The primary watercourse in Heimsheim is the Kotzenbach (also called the Zieselbach), which drains into the Würm to the southwest.