[2] The suburb is divided diagonally by Ocean Road, with the northern part of the suburb mainly residential, and the southern park partly occupied by a golf course and a quarry.
[3] Prior to the 1836 British colonisation of South Australia, the area was inhabited by the Kaurna people, who occupied the land from Cape Jervis in the south up the western side of the Fleurieu Peninsula, to Crystal Brook in the north, west to the Mount Lofty Ranges, across to Gulf Saint Vincent, including the Adelaide Plains and city of Adelaide.
[4][5] The Kaurna name for the area was Wita-wattingga, or Wita-wita, was the Kaurna name of an area on the north side of O'Halloran Hill, which was then covered in low woodland of Eucalyptus porosa and/or Eucalyptus odorata known as mallee peppermint gums.
The forested area named thus included the north-western slopes at South Brighton and Seaview Downs, across to Seacliff Park, and probably also included the area across the hill nearly as far as the present Main South Road as well as westwards as far as the eastern slopes of Marino.
[7] In the 2016 Australian census, there were 2,439 people living in Seacliff Park.