Eudunda is a town in the Mid North region of South Australia, situated 110 kilometres northeast of Adelaide in the Regional Council of Goyder. …Eudunda is a town in the Mid North region of South Australia, situated 110 kilometres northeast of Adelaide in the Regional Council of Goyder. As of 2021, Eudunda had a population of 815 people. Eudunda is known as the birthplace of author and educator Colin Thiele.