The Chukyo area (Aichi and Gifu Prefectures) and The Keihin area (Tokyo, Kanagawa and Saitama Prefectures) are two major automobile producing areas in Japan. Toyota City, a small city in the Chukyo area, has developed hand in hand with the growth of the Toyota Motor Company, ranking first among the car makers in Japan, and the population of the city has been increased remarkably since about 1960. Toyota Motor Company has much effected on the municipal administration and the economic activities.
Accordingly, Toyota City should be considered as one of the typical mono-industry city in Japan. Both Toyota City and Kariya City where large scale parts makers (controlled by the Toyota Co.) are located take a leading position in the automobile industry in the Chukyo area.