Obihiro is a city located in Tokachi, Hokkaid, Japan. Obihiro is the only city in the Tokachi area. The next most populous municipality in Tokachi is the town of Otofuke, with less than a third of Obihiro's population. The city has approximately 500 foreign residents (as of 2008). The city contains the headquarters of the fifth division of the northern army of the Japan Ground Self-Defense Force. It also hosts the Rally Japan World Rally Championship-event. In 2008, Obihiro was designated as a 'model environmental city' in Japan. Obihiro was the area first settled by Benz Yoda in May 1883. It became a city on April 1, 1933. In 1957 the villages of Taish and Kawanishi merged with Obihiro, bringing it to its current size.