Onkaparinga Hills is a southern suburb of Adelaide, in the City of Onkaparinga. It covers an area of approximately 22 square kilometres (8.5 sq mi). It has a population of 2534 people (2011 Census). It is a leafy suburb that includes parts of the Onkaparinga River National Park.
Nearly 60% of families in the area are couples with children, compared to an Australian average of 45.3%. The median rent in 2006 was $230. The current median cost of a home in the area is $390 000. 93.5% of people speak English only at home (Australian average 78.5%) and 91% are Australian citizens compared to the Australian average of 86.1%. The Onkaparinga Hills are examples of folding.