is a subprefecture of Hokkaido Prefecture, Japan. Geography Located in south-central Hokkaido, Iburi stretches East-West and North-South. Iburi covers an area of . Iburi borders Oshima Subprefecture to the West, Shiribeshi, Ishikari, and Sorachi Subprefectures to the North, and Hidaka Subprefecture to the East. On its South side, Iburi has of coastline with the Pacific Ocean. Municipalities Mergers History 1897: Muroran Subprefecture was established. 1922: Muroran Subprefecture was renamed Iburi Subprefecture. References External links Official website Subprefectures in Hokkaido