Borrika is a town and locality in South Australia. It is on the Karoonda Highway 16 km east of Karoonda, and was on the Barmera railway line (opened 1913), later known as the Loxton railway line when the end of the main line closed but the Loxton branch remained open until 2015 and has now also closed. The 2016 Australian census which was conducted in August 2016 reports that Borrika had a population of 42 people. Borrika is located in the local government area of District Council of Karoonda East Murray, the state electoral district of Hammond and the federal Division of Barker.