This page links to the list of mergers and dissolutions of municipalities in Japan for each prefecture.
For a list of dissolved municipalities, see also: Category:Dissolved municipalities of Japan and the sister category Category:Former districts of Japan.
Note that most of the prefectural websites linked below are in Japanese.
Japan is divided into 47 prefectures, which rank immediately below the national government and form the country's first level of jurisdiction and administrative division. They include 43 prefectures proper, two urban prefectures, one "circuit" or "territory" and one metropolis. In 1868, the Meiji Fuhanken sanchisei administration created the first prefectures to replace the urban and rural administrators in the parts of the country previously controlled directly by the shogunate and a few territories of rebels/shogunate loyalists who had not submitted to the new government such as Aizu/Wakamatsu. In 1871, all remaining feudal domains (han) were also transformed into prefectures, so that prefectures subdivided the whole country. In several waves of territorial consolidation, today's 47 prefectures were formed by the turn of the century. In many instances, these are contiguous with the ancient ritsuryō provinces of Japan.
Saga Prefecture is a prefecture of Japan located on the island of Kyūshū. Saga Prefecture has a population of 809,248 and has a geographic area of 2,440 km2. Saga Prefecture borders Fukuoka Prefecture to the northeast and Nagasaki Prefecture to the southwest.
A city is a local administrative unit in Japan. Cities are ranked on the same level as towns and villages, with the difference that they are not a component of districts. Like other contemporary administrative units ,they are defined by the Local Autonomy Law of 1947.
In Japan, a district is composed of one or more rural municipalities within a prefecture. Districts have no governing function, and are only used for geographic or statistical purposes such as mailing addresses. Cities are not part of districts.
Special wards are a special form of municipalities in Japan under the 1947 Local Autonomy Law. They are city-level wards: primary subdivisions of a prefecture with municipal autonomy largely comparable to other forms of municipalities.
Ōmi Province was a province of Japan, which today comprises Shiga Prefecture. It was one of the provinces that made up the Tōsandō circuit. Its nickname is Gōshū (江州). Under the Engishiki classification system, Ōmi was ranked as one of the 13 "great countries" (大国) in terms of importance, and one of the "near countries" (近国) in terms of distance from the capital.
Japan has three levels of governments: national, prefectural, and municipal. The nation is divided into 47 prefectures. Each prefecture consists of numerous municipalities, with 1,719 in total. There are four types of municipalities in Japan: cities, towns, villages and special wards. In Japanese, this system is known as shikuchōson (市区町村), where each kanji in the word represents one of the four types of municipalities. Some designated cities also have further administrative subdivisions, also known as wards. But, unlike the Special wards of Tokyo, these wards are not municipalities.
Kōka was a district located in Shiga Prefecture, Japan.
( Japan > Fukui Prefecture > Asuwa District )
Yokoshibahikari is a town located in Chiba Prefecture, Japan. As of 1 April 2020, the town had an estimated population of 23,467 in 9771 households and a population density of 350 persons per km². The total area of the town is 66.91 square kilometres (25.83 sq mi).
Ichinoseki is a city located in Iwate Prefecture, in the Tōhoku region of northern Japan. As of 1 May 2020, the city had a population of 114,476 and a population density of 91 persons per km² in 46,375 households. It is currently the second largest city by population in the prefecture, after Morioka. The total area of the city was 1,256.42 square kilometers (485.11 sq mi).