The District Council of Willunga was established on 18 August 1853 to govern the Hundred of Willunga and the southernmost portion of the Hundred of Kuitpo, one of the sets of earliest local government bodies to be created in the state.
[1] The district was bounded on the north-west by the Onkaparinga River up to the present-day boundary between Blewitt Springs and Clarendon.
It was bounded on the north-east by straight lines passing to the Wickam Hill and North Mount Magnificent trig stations.
The ridgelines making up the southern borders of the hundreds of Kuitpo and Willunga formed the southern boundary of the district, passing through the South Mount Magnificent trig station, Willunga Hill and Sellicks Hill.
[3] In 1932 Aldinga was dissolved and the land absorbed back into Willunga council.