Cities of Japan

Cities in Japan are one of the basic local entities of the nation.
Japan's smallest sub-national jurisdictions are sometimes grouped together. The term "shichoson" combines suffixes which recognize the municipalities, including
The small cities generally have populations of over 30,000.
There are three defined classes or categories of big cities. 
Each of the largest cities does many of the things normally done by prefectures. 
History.
Japan's system of local governments date from 1947. Cities in Japan are local governments which are defined by the Local Autonomy Law.