Pori (Finnish: [ˈpori]; Swedish: Björneborg [bjœːrneˈborj] (listen); Latin: Arctopolis) is a city and municipality on the west coast of Finland. The city is located some 10 kilometres (6 mi) from the Gulf of Bothnia, on the estuary of the Kokemäki River, 110 kilometres (68 mi) west of Tampere, 140 kilometres (87 mi) north of Turku and 241 kilometres (150 mi) north-west of Helsinki, the capital of Finland. Pori was established in 1558 by Duke John, who later became King John III of Sweden.The city has a population of 83,491 (31 December 2021) and covers an area of 2,062.00 square kilometres (796.14 sq mi) of which 870.01 km2 (335.91 sq mi) is water. The population density is 100.1/km2 (259/sq mi). The municipality is unilingually Finnish. It is the 10th largest city in Finland, and the 7th largest urban area. Pori is also the capital of the Satakunta region (pop. 224,028) and the Pori sub-region (pop. 136,905).