is a district located in Hiyama Subprefecture, Hokkaido, Japan. As of 2004, the district has an estimated population of 21,896 and a density of 19.59 persons per km2. The total area is 1,117.57 km2. Towns and villages Assabu Esashi Kaminokuni Notable place Katsuyama Date - A castle ruin, was listed as one of the National Historic Site and Continued 100 Fine Castles of Japan. References Districts in Hokkaido