Nagoya Initiative Chūkyō Industrial Area Chūkyō Television Broadcasting Chukyo University List of metropolitan areas in Japan by population Notes The area defined by the Chukyo Area Person-Trip Survey, a study of commuter movement, is slightly different from the census definition. It includes southern Aichi and areas immediately north of Gifu City. It adds two cities in Aichi Prefecture (Tahara and Toyohashi) and two cities in Gifu Prefecture (Mino and Seki). Additionally, it excludes two cities in Gifu Prefecture (Ena and Nakatsugawa). Metropolitan areas of Japan Chūbu region