Port Augusta is a small city in South Australia. Formerly a seaport, it is now a road traffic and railway junction city mainly located on the east coast of the Spencer Gulf immediately south of the gulf’s head and about 322 kilometres north of the state capital, Adelaide. The suburb of Port Augusta West is located on the west side of the gulf on the Eyre Peninsula. Other major industries included, up until the mid-2010s, electricity generation. At June 2018, the estimated urban population was 13,799, having declined at an average annual rate of -0.53% over the preceding five years.