Since 1871 the administrative center of the district is located in Dielsdorf. Before it was named Regensberg District.
Communities
... a total area of 4.4 km² (1.7 mi²). 3.3 km² (1.3 mi²) of it is land and 1.1 km² (0.4 mi²) of it is water. The total area is 25.44% water. ...