is a district located in Niigata Prefecture, Japan. Population As of July 1, 2019, the district has a population of 9,218 and a density of 54.2 persons per km2. The area is now 170.21 km2. Geography The district has one village Tsunan History In 1954, the town of Tōkamachi gained status after merging with three villages and later gained more land by merging surrounding villages. There were some villages from the northside of the district merged into the city of Ojiya. On April 1, 2005 the town of Kawanishi, and the village of Nakasato merged with the city of Tōkamachi, leaving the district with the village of Tsunan. External links 十日町広域圏合併協議会 Districts in Niigata Prefecture