(This article is about the town. For the river, see Arthur River (Tasmania).) Arthur River is the name of a small township on the northern part of the West Coast of Tasmania, Australia. At the 2006 census, Arthur River and the surrounding area had a population of 121. On the coast near the mouth of the Arthur River is a plaque titled The Edge of the World. North West Coast Tasmania, and a poem by tourism pioneer Brian Inder, who coined the term, referring to the coastline at Arthur River which is regularly lashed by the gales of the Roaring Forties.