Tornio (Official name: Tornion kaupunki; in Northern Sami: Duortnus; in Swedish: Torneå) is a town and municipality in Lapland, Finland. The municipality covers an area of 1,348.55 square kilometres (520.68 sq mi) of which 161.59 km² (62.39 sq mi) is water. The population density is 18.82 inhabitants per square kilometre (48.7/sq mi), with a total population of 22,334 (30 November 2014). It borders the Swedish municipality of Haparanda (in Finnish: Haaparanta).