Muroran is a city and port located in Iburi, Hokkaid, Japan. It is the capital city of Iburi Subprefecture. As of 2008, the city has an estimated population of 96,724 and a density of 1,210 people per Square kilometer. The total area is 80.65 Square kilometers. The origin of Muroran's name is derived from the Ainu word "Mo Ruerani" that means "the bottom of a little slope". The little slope, in front of the former Senkai Temple in Sakimori-cho, is noted in connection with the name of Muroran. In the late 16th century, the Muroran region came under the administration of the Matsumae clan. Muroran was developed as a trading post between the Ainu and the Matsumae clan people.