data seto japanSeto, city, Aichi ken (prefecture), central Honshu, Japan, northeast of Nagoya. Seto, established about 1230, is known for its porcelain (Seto ware). Since the Meiji period (1868–1912),Seto Localisation : Country Japan, Prefecture Aichi. Available Information : Geographical coordinates, Population, Area, Altitude, Weather and Hotel. Nearby cities