The main town and the site of its municipal council was the town of Aulum.
Aulum-Haderup municipality ceased to exist as the result of Kommunalreformen ("The Municipality Reform" of 2007). On January 1 2007 it was merged with former Herning, Trehøje, and Aaskov municipalities to form the new Herning municipality. This created a municipality with an area of 1,336 km² and a total population of 82,935 (2005). The new municipality belongs to the Region Midtjylland ("Mid-Jutland Region").