Port Lincoln is a city on the Lower Eyre Peninsula in the Australian state of South Australia. It is situated on the shore of Boston Bay, which opens eastward into Spencer Gulf. It is the largest city in the West Coast region, and is located approximately 280 km as the crow flies from the State's capital city of Adelaide. In June 2019 Port Lincoln had an estimated population of 16,418, having grown at an average annual rate of 0.55% year-on-year over the preceding five years. The city is reputed to have the most millionaires per capita in Australia, as well as claiming to be Australia's "Seafood Capital".