Mount Willoughby is a locality in the Australian state of South Australia located about 837 kilometres north-west of the capital city of Adelaide and about 84 kilometres north-west of the town of Coober Pedy.
Population: 24 (shared with other localities) (2016 census)
Established: 26 April 2013
Location: 837 km (520 mi) north-west of Adelaide · 84 km (52 mi) north-west of Coober Pedy