The city was founded on September 1, 2005 from the merger of the towns of Ashiro and Nishine and the village of Matsuo, all from Iwate District . As of its founding, the city has an estimated population of 31,751 and the density of 107.96 persons per km². The total area is 862.25 km². September 1 is the 244th day of the year (245th in leap years). ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... Ashiro (安代町; -chou) is a town located in Iwate District, Japan. ... Nishine (西根町; -chou) is a town located in Iwate District, Iwate, Japan. ... Matsuo (松尾村; -mura) is a village located in Iwate District, Iwate, Japan. ... Iwate (岩手郡; -gun) is a district located in Iwate, Japan. ... Population density is a measurement of population per unit area or unit volume. ... Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ...