The Limestone Coast is a South Australian Government Region which consists of land within the following local government areas located in the south east of the state: the City of Mount Gambier and the District Councils of Grant, Kingston, Robe, Tatiara and Naracoorte Lucindale and the Wattle Range Council, and the extent of coastal waters up to three nautical miles seaward of the low water mark between the border with Victoria in the east and the northern boundary of the Kingston District Council in the north-west.