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 (646 km by road). The city is reputed to have the most millionaires per capita in Australia. The town claims to be the "Seafood Capital of Australia".