Mergers before April 1, 1999

• On February 1, 1991 - the city of Kumamoto
  Kumamoto, Kumamoto
  is the capital city of Kumamoto Prefecture on the island of Kyushu, Japan. Greater Kumamoto has a population of 1,460,000, as of the 2000 census...
  
  absorbed the towns of Akita
  Akita, Kumamoto
  was a town located in Hōtaku District, Kumamoto, Japan.On February 1, 1991 Akita, along with the towns of Kawachi, Tenmei and Hokubu, all from Hōtaku District, was merged into the expanded city of Kumamoto and no longer exists as an independent municipality....
  
  , Kawachi
  Kawachi, Kumamoto
  was a town located in Hōtaku District, Kumamoto, Japan.On February 1, 1991 Kawachi, along with the towns of Akita, Tenmei and Hokubu, all from Hōtaku District, was merged into the expanded city of Kumamoto and no longer exists as an independent municipality....
  
  , Tenmei
  Tenmei, Kumamoto
  was a town located in Hōtaku District, Kumamoto, Japan.On February 1, 1991 Tenmei, along with the towns of Akita, Kawachi and Hokubu, all from Hōtaku District, was merged into the expanded city of Kumamoto and no longer exists as an independent municipality....
  
   and Hokubu
  Hokubu, Kumamoto
  was a town located in Hōtaku District, Kumamoto, Japan.On February 1, 1991 Hokubu, along with the towns of Akita, Kawachi and Tenmei, all from Hōtaku District, was merged into the expanded city of Kumamoto and no longer exists as an independent municipality....
  
  , all from Hōtaku District
  Hōtaku District, Kumamoto
  was a district located in Kumamoto Prefecture, Japan.-Former towns and villages:* Akita* Kawachi* Tenmei* Hokubu-Merger:*On February 1, 1991, all towns within the district merged into the expanded city of Kumamoto. Hōtaku District was dissolved as a result of this merger....
  
  . Hōtaku District
  Hōtaku District, Kumamoto
  was a district located in Kumamoto Prefecture, Japan.-Former towns and villages:* Akita* Kawachi* Tenmei* Hokubu-Merger:*On February 1, 1991, all towns within the district merged into the expanded city of Kumamoto. Hōtaku District was dissolved as a result of this merger....
  
   was dissolved with this merger.

Mergers from April 1, 1999 to Present

• On April 1, 2003 - the municipalities of Fukada, Menda, Ue, Sue and Ōkaharu from Kuma District
  Kuma District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.In 2003 the district had an estimated population of 64,552 and a density of 48.64 persons per square kilometer. The total area is 1,327.16 km².-Culture:...
  
   merged to form the new town of Asagiri
  Asagiri, Kumamoto
  is a town located in Kuma District, Kumamoto, Japan.As of September 2011 the town has an estimated population of 16,980. The total area is 159.49 km².Asagiri was created by the merger of 5 smaller towns and villages on April 1, 2003...
  
  .

• On March 31, 2004 - the towns of Himedo
  Himedo, Kumamoto
  was a town located in Amakusa District, Kumamoto, Japan.On March 31, 2004 Himedo was merged with the towns of Matsushima, Ōyano and Ryūgatake, all from Amakusa District, to form the new city of Kami-Amakusa and no longer exists as an independent municipality....
  
  , Matsushima
  Matsushima, Kumamoto
  Matsushima was a town located in Amakusa District, Kumamoto, Japan.On March 31, 2004 Matsushima was merged with the towns of Himedo, Ōyano and Ryūgatake, all from Amakusa District, to form the new city of Kami-Amakusa and no longer exists as an independent municipality.As of 2003, the town had an...
  
  , Ōyano
  Oyano, Kumamoto
  was a town located in Amakusa District, Kumamoto, Japan.On March 31, 2004 Ōyano was merged with the towns of Himedo, Matsushima and Ryūgatake, all from Amakusa District, to form the new city of Kami-Amakusa and no longer exists as an independent municipality....
  
   and Ryūgatake
  Ryugatake, Kumamoto
  Ryūgatake was a town located in Amakusa District, Kumamoto, Japan.On March 31, 2004 Ryūgatake was merged with the towns of Himedo, Matsushima and Ōyano, all from Amakusa District, to form the new city of Kami-Amakusa and no longer exists as an independent municipality.As of 2003, the town had an...
  
   from Amakusa District
  Amakusa District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the March 27, 2006 Amakusa merger the district consists of the single town of Reihoku. After the merger, the district has an estimated population of 9,105 and a density of 135.77 persons per km²...
  
   merged to form the new city of Kami-Amakusa
  Kami-Amakusa, Kumamoto
  is a city located in Kumamoto Prefecture, Japan.It was founded on March 31, 2004, by merging the three cities Himedo, Matsushima, Ōyano and Ryūgatake, all from Amakusa District....
  
  .

• On November 1, 2004 - the towns of Chūō
  Chuo, Kumamoto
  Chūō was a town located in Shimomashiki District, Kumamoto, Japan.On November 1, 2004 Chūō was merged with the town of Tomochi, also from Shimomashiki District, to form the new town of Misato and no longer exists as an independent municipality....
  
   and Tomochi
  Tomochi, Kumamoto
  Tomochi was a town located in Shimomashiki District, Kumamoto, Japan.On November 1, 2004 Tomochi was merged with the town of Chūō, also from Shimomashiki District, to form the new town of Misato and no longer exists as an independent municipality.As of 2003, the town had an estimated population of...
  
   from Shimomashiki District
  Shimomashiki District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the March 23, 2010 Kumamoto merger the district consists of the single town of Misato. After the merger, the district has an estimated population of 11,164 and a density of 77.5 persons per square kilometer...
  
   merged to form the new town of Misato
  Misato, Kumamoto
  is a town located in Shimomashiki District, Kumamoto, Japan. From Kumamoto, Misato is about 30 minutes by car or an hour and a half by bus. While it is easily accessible by car or bus, there is currently no train service to the town....
  
  .

• On January 1, 2005 - the towns of Tanoura
  Tanoura, Kumamoto
  Tanoura was a town located in Ashikita District, Kumamoto, Japan.On January 1, 2005 Tanoura was merged into the expanded town of Ashikita and no longer exists as an independent municipality....
  
   and Ashikita
  Ashikita, Kumamoto
  is a town located in Ashikita District, Kumamoto, Japan.On January 1, 2005 the town of Tanoura was merged into Ashikita.As of this merger but with 2003 population data, the town has an estimated population of 21,644 and a density of 92.7 persons per km²...
  
   from Ashikita District
  Ashikita District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of 2003, the district has an estimated population of 27,264 and a density of 101.94 persons per square kilometer. The total area is 267.45 km².-Merger:...
  
   merged to form the new town of Ashikita
  Ashikita, Kumamoto
  is a town located in Ashikita District, Kumamoto, Japan.On January 1, 2005 the town of Tanoura was merged into Ashikita.As of this merger but with 2003 population data, the town has an estimated population of 21,644 and a density of 92.7 persons per km²...
  
  .

• On January 15, 2005 - the towns of Misumi
  Misumi, Kumamoto
  Misumi was a town located in Uto District, Kumamoto, Japan.On January 15, 2005 Misumi was merged with the town of Shiranuhi, also from Uto District, and the towns of Matsubase, Ogawa and Toyono, all from Shimomashiki District, to form the new city of Uki and no longer exists as an independent...
  
   and Shiranuhi
  Shiranuhi, Kumamoto
  Shiranuhi was a town located in Uto District, Kumamoto, Japan.On January 15, 2005 Shiranuhi was merged with the town of Misumi, also from Uto District, and the towns of Matsubase, Ogawa and Toyono, all from Shimomashiki District, to form the new city of Uki and no longer exists as an independent...
  
   from Uto District
  Uto District, Kumamoto
  was a district located in Kumamoto Prefecture, Japan.As of 2003, the district had an estimated population of 19,496 and the density of 252.77 persons per square kilometer. The total area was 77.13 km².-Merger:...
  
   and the towns of Matsubase
  Matsubase, Kumamoto
  was a town located in Shimomashiki District, Kumamoto, Japan.On January 15, 2005 Matsubase was merged with the towns of Misumi and Shiranuhi, both from Uto District, and the towns of Ogawa and Toyono, all from Shimomashiki District, to form the new city of Uki and no longer exists as an independent...
  
  , Ogawa
  Ogawa, Kumamoto
  Ogawa was a town located in Shimomashiki District, Kumamoto, Japan.On January 15, 2005 Ogawa was merged with the towns of Misumi and Shiranuhi, both from Uto District, and the towns of Matsubase and Toyono, all from Shimomashiki District, to form the new city of Uki and no longer exists as an...
  
   and Toyono
  Toyono, Kumamoto
  Toyono was a town located in Shimomashiki District, Kumamoto, Japan.On January 15, 2005 Toyono was merged with the towns of Misumi and Shiranuhi, both from Uto District, and the towns of Matsubase and Ogawa, all from Shimomashiki District, to form the new city of Uki and no longer exists as an...
  
   from Shimomashiki District
  Shimomashiki District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the March 23, 2010 Kumamoto merger the district consists of the single town of Misato. After the merger, the district has an estimated population of 11,164 and a density of 77.5 persons per square kilometer...
  
   merged to form the new city of Uki
  Uki, Kumamoto
  is a city located in Kumamoto Prefecture, Japan.The city was founded on January 15, 2005, as a result of the merger between the towns of Misumi and Shiranuhi, both from Uto District, and the towns of Matsubase, Ogawa and Toyono, all from Shimomashiki District....
  
  . Uto District
  Uto District, Kumamoto
  was a district located in Kumamoto Prefecture, Japan.As of 2003, the district had an estimated population of 19,496 and the density of 252.77 persons per square kilometer. The total area was 77.13 km².-Merger:...
  
   was dissolved with this merger.

• On January 15, 2005 - the city of Yamaga
  Yamaga, Kumamoto
  is a city located in Kumamoto, Japan.On January 15, 2005 Yamaga absorbed the towns of Kahoku, Kamoto, Kaō and Kikuka, all from Kamoto District, into the new expanded city of Yamaga....
  
   merged with the towns of Kahoku
  Kahoku, Kumamoto
  was a town located in Kamoto District, Kumamoto, Japan.On January 15, 2005 Kahoku, along with the towns of Kamoto, Kaō and Kikuka, all from Kamoto District, was merged into the expanded city of Yamaga and no longer exists as an independent municipality....
  
  , Kamoto
  Kamoto, Kumamoto
  was a town located in Kamoto District, Kumamoto, Japan.On January 15, 2005 Kamoto, along with the towns of Kahoku, Kaō and Kikuka, all from Kamoto District, was merged into the expanded city of Yamaga and no longer exists as an independent municipality....
  
  , Kaō
  Kao, Kumamoto
  was a town located in Kamoto District, Kumamoto, Japan.On January 15, 2005 Kaō, along with the towns of Kahoku, Kamoto and Kikuka, all from Kamoto District, was merged into the expanded city of Yamaga and no longer exists as an independent municipality....
  
   and Kikuka
  Kikuka, Kumamoto
  Kikuka was a town located in Kamoto District, Kumamoto, Japan.On January 15, 2005 Kikuka, along with the towns of Kahoku, Kamoto and Kaō, all from Kamoto District, was merged into the expanded city of Yamaga and no longer exists as an independent municipality.As of 2003, the town had an estimated...
  
   from Kamoto District
  Kamoto District, Kumamoto
  was a district located in Kumamoto Prefecture, Japan.As of 2003, the district had an estimated population of 31,088 and the density of 472.39 persons per square kilometer...
  
   to form the new city of Yamaga
  Yamaga, Kumamoto
  is a city located in Kumamoto, Japan.On January 15, 2005 Yamaga absorbed the towns of Kahoku, Kamoto, Kaō and Kikuka, all from Kamoto District, into the new expanded city of Yamaga....
  
  .

• On February 11, 2005 - the municipalities of Aso
  Aso, Kumamoto
  is a city located in Kumamoto Prefecture, Japan.The city was formed on February 11, 2005 from the merger of the former town of Aso with the town of Ichinomiya, and the village of Namino, all from Aso District....
  
  , Ichinomiya
  Ichinomiya, Kumamoto
  was a town located in Aso District, Kumamoto, Japan.On February 11, 2005 Ichinomiya was merged with the town of Aso , and the village of Namino, all from Aso District, to form the new city of Aso and no longer exists as an independent municipality....
  
   and Namino
  Namino, Kumamoto
  Namino was a village located in Aso District, Kumamoto, Japan.On February 11, 2005 Nanimo was merged with the towns of Aso and Ichinomiya, all from Aso District, to form the new city of Aso and no longer exists as an independent municipality.As of 2003, the village had an estimated population of...
  
   from Aso District
  Aso District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Aso and Yamato mergers but with 2003 population data, the district has an estimated population of 40,841 and a density of 58.1 persons per square kilometer...
  
   merged to form the new city of Aso
  Aso, Kumamoto
  is a city located in Kumamoto Prefecture, Japan.The city was formed on February 11, 2005 from the merger of the former town of Aso with the town of Ichinomiya, and the village of Namino, all from Aso District....
  
  .

• On February 11, 2005 - the municipalities of Yabe
  Yabe, Kumamoto
  was a town located in Kamimashiki District, Kumamoto, Japan.On February 11, 2005 Yabe was merged with the village of Seiwa, also from Kamimashiki District, and the town of Soyō, from Aso District, to form the new town of Yamato and no longer exists as an independent municipality.As of 2003, the...
  
   and Seiwa
  Seiwa, Kumamoto
  Seiwa was a village located in Kamimashiki District, Kumamoto, Japan.On February 11, 2005 Seiwa was merged with the town of Yabe, also from Kamimashiki District, and the town of Soyō, from Aso District, to form the new town of Yamato and no longer exists as an independent municipality.As of 2003,...
  
   from Kamimashiki District
  Kamimashiki District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Yamato merger but with 2003 population statistics, the district had an estimated population of 90,315 and a density of 115.2 persons per square kilometer...
  
   and Soyō
  Soyo, Kumamoto
  Soyō was a town located in Aso District, Kumamoto, Japan.On February 11, 2005 Soyō was merged with the town of Yabe, and the village of Seiwa, both from Kamimashiki District, to form the new town of Yamato and no longer exists as an independent municipality.As of 2003, the town had an estimated...
  
   from Aso District
  Aso District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Aso and Yamato mergers but with 2003 population data, the district has an estimated population of 40,841 and a density of 58.1 persons per square kilometer...
  
   merged to form the new town of Yamato
  Yamato, Kumamoto
  is a town located in Kamimashiki District, Kumamoto, Japan.The town was formed on February 11, 2005 from the merger of the municipalities of Yabe and Seiwa with the town of Soyō from Aso District....
  
  in Kamimashiki District
  Kamimashiki District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Yamato merger but with 2003 population statistics, the district had an estimated population of 90,315 and a density of 115.2 persons per square kilometer...
  
  .

• On February 13, 2005 - the villages of Chōyō
  Choyo, Kumamoto
  was a village located in Aso District, Kumamoto, Japan.On February 13, 2005 Chōyō was merged the villages of Hakusui and Kugino, all from Aso District, to form the new village of Minamiaso and no longer exists as an independent municipality....
  
  , Hakusui
  Hakusui, Kumamoto
  was a village located in Aso District, Kumamoto, Japan.On February 13, 2005 Hakusui was merged the villages of Chōyō and Kugino, all from Aso District, to form the new village of Minamiaso and no longer exists as an independent municipality....
  
   and Kugino
  Kugino, Kumamoto
  Kugino was a village located in Aso District, Kumamoto, Japan.On February 13, 2005 Kugino was merged the villages of Chōyō and Hakusui, all from Aso District, to form the new village of Minamiaso and no longer exists as an independent municipality.As of 2003, the village had an estimated...
  
   from Aso District
  Aso District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Aso and Yamato mergers but with 2003 population data, the district has an estimated population of 40,841 and a density of 58.1 persons per square kilometer...
  
   merged to form the new village of Minamiaso
  Minamiaso, Kumamoto
  is a village located in Aso District, Kumamoto, Japan. It was formed on February 13, 2005 from the merger of the villages of Chōyō, Hakusui and Kugino. Neighbouring towns are Takamori-Machi , Ozu-machi and Nishihara-mura ....
  
  .

• On March 22, 2005 - the city of Kikuchi
  Kikuchi, Kumamoto
  is a city located in Kumamoto, Japan.The city was founded on August 1, 1958. On March 22, 2005, the city merged with the municipalities of Kyokushi, Shichijo and Shisui into a new expanded city of Kikuchi. As of December 2006, the city has an estimated population of 52,646 and a density of 190.3...
  
   merged with the municipalities of Kyokushi
  Kyokushi, Kumamoto
  Kyokushi was a village located in Kikuchi District, Kumamoto, Japan.On March 22, 2005 Kyokushi, along with the towns of Shichijō and Shisui, all from Kikuchi District, was merged into the expanded city of Kikuchi and no longer exists as an independent municipality.As of 2003, the village had an...
  
  , Shichijo
  Shichijo, Kumamoto
  was a town located in Kikuchi District, Kumamoto, Japan.On March 22, 2005 Shichijō, along with the town of Shisui, and the village of Kyokushi, all from Kikuchi District, was merged into the expanded city of Kikuchi and no longer exists as an independent municipality.As of 2003, the town had an...
  
   and Shisui
  Shisui, Kumamoto
  Shisui was a town located in Kikuchi District, Kumamoto, Japan.On March 22, 2005 Shisui, along with the town of Shichijō, and the village of Kyokushi, all from Kikuchi District, was merged into the expanded city of Kikuchi and no longer exists as an independent municipality.As of 2003, the town...
  
   from Kikuchi District
  Kikuchi District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Koshi merger but with 2003 population statistics, the district has an estimated population of 58,300 and a density of 427 persons per square kilometer...
  
   to form the new city of Kikuchi
  Kikuchi, Kumamoto
  is a city located in Kumamoto, Japan.The city was founded on August 1, 1958. On March 22, 2005, the city merged with the municipalities of Kyokushi, Shichijo and Shisui into a new expanded city of Kikuchi. As of December 2006, the city has an estimated population of 52,646 and a density of 190.3...
  
  .

• On August 1, 2005 - the city of Yatsushiro
  Yatsushiro, Kumamoto
  is a city located in Kumamoto, Japan.On August 1, 2005, the city merged with the municipalities of Izumi, Kagami, Sakamoto, Senchō and Tōyō to form the new expanded city of Yashushiro....
  
   merged with the municipalities of Izumi
  Izumi, Kumamoto
  was a village located in Yatsushiro District, Kumamoto, Japan.On August 1, 2005 Izumi, along with the towns of Kagami and Senchō, and the villages of Sakamoto and Tōyō, all from Yatsushiro District, was merged into the expanded city of Yatsushiro and no longer exists as an independent...
  
  , Kagami
  Kagami, Kumamoto
  was a town located in Yatsushiro District, Kumamoto, Japan.On August 1, 2005 Kagami, along with the town of Senchō, and the villages of Izumi, Sakamoto and Tōyō, all from Yatsushiro District, was merged into the expanded city of Yatsushiro and no longer exists as an independent municipality.As of...
  
  , Sakamoto
  Sakamoto, Kumamoto
  was a village located in Yatsushiro District, Kumamoto, Japan.On August 1, 2005 Sakamoto, along with the towns of Kagami and Senchō, and the villages of Izumi and Tōyō, all from Yatsushiro District, was merged into the expanded city of Yatsushiro and no longer exists as an independent...
  
  , Senchō
  Sencho, Kumamoto
  was a town located in Yatsushiro District, Kumamoto, Japan.On August 1, 2005 Senchō, along with the town of Kagami, and the villages of Izumi, Sakamoto and Tōyō, all from Yatsushiro District, was merged into the expanded city of Yatsushiro and no longer exists as an independent municipality.As of...
  
   and Tōyō
  Toyo, Kumamoto
  was a village located in Yatsuhiro District, Kumamoto, Japan.On August 1, 2005 Tōyō, along with the towns of Kagami and Senchō, and the villages of Izumi and Sakamoto, all from Yatsushiro District, was merged into the expanded city of Yatsushiro and no longer exists as an independent municipality...
  
   from Yatsushiro District
  Yatsushiro District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Yatsushiro merger but with 2003 population estimates, the district has an estimated population of 13,524 and a density of 406 persons per square kilometer...
  
   to form the new city of Yatsushiro
  Yatsushiro, Kumamoto
  is a city located in Kumamoto, Japan.On August 1, 2005, the city merged with the municipalities of Izumi, Kagami, Sakamoto, Senchō and Tōyō to form the new expanded city of Yashushiro....
  
  .

• On October 1, 2005 - the towns of Miyahara
  Miyahara, Kumamoto
  Miyahara was a town located in Yatsushiro District, Kumamoto, Japan.On October 1, 2005 Miyahara was merged with the town of Ryūhoku, also from Yatsushiro District, to form the new town Hikawa, as part of the "Great Heisei Merger" government initiative.As of 2003 the town had an estimated...
  
   and Ryūhoku
  Ryuhoku, Kumamoto
  Ryūhoku was a town located in Yatsushiro District, Kumamoto, Japan.On October 1, 2005 Ryūhoku was merged with the town of Miyahara, also from Yatsushiro District, to form the new town Hikawa, as part of the "Great Heisei Merger" government initiative.As of 2003, the town had an estimated...
  
   from Yatsushiro District
  Yatsushiro District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Yatsushiro merger but with 2003 population estimates, the district has an estimated population of 13,524 and a density of 406 persons per square kilometer...
  
   merged to form the new town of Hikawa
  Hikawa, Kumamoto
  is a town located in Yatsushiro District, Kumamoto, Japan. The town was formed on October 1, 2005 from the merger of the towns of Miyahara and Ryūhoku....
  
  .

• On October 3, 2005 - the city of Tamana
  Tamana, Kumamoto
  is a city located in Kumamoto, Japan.As of the October 3, 2005 merger but with 2008 population estimates, the city has an estimated population of 70,530 and the density of 462 persons per km²...
  
   merged with the towns of Taimei
  Taimei, Kumamoto
  was a town located in Tamana District, Kumamoto, Japan.On October 3, 2005 Taimei, along with the towns of Tensui and Yokoshima, all from Tamana District, was merged into the expanded city of Tamana and no longer exists as an independent municipality....
  
  , Tensui
  Tensui, Kumamoto
  Tensui was a town located in Tamana District, Kumamoto, Japan.On October 3, 2005 Tensui, along with the towns of Taimei and Yokoshima, all from Tamana District, was merged into the expanded city of Tamana and no longer exists as an independent municipality.As of 2003, the town had an estimated...
  
   and Yokoshima
  Yokoshima, Kumamoto
  Yokoshima was a town located in Tamana District, Kumamoto, Japan.On October 3, 2005 Yokoshima, along with the towns of Taimei and Tensui, all from Tamana District, was merged into the expanded city of Tamana and no longer exists as an independent municipality.As of 2003, the town had an estimated...
  
   from Tamana District
  Tamana District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the Tamana merger but with 2003 population estimates, the district has an estimated population of 47,029 and the density of 222 persons per square kilometer...
  
   to form the new city of Tamana
  Tamana, Kumamoto
  is a city located in Kumamoto, Japan.As of the October 3, 2005 merger but with 2008 population estimates, the city has an estimated population of 70,530 and the density of 462 persons per km²...
  
  .

• On February 27, 2006 - the towns of Kōshi
  Koshi, Kumamoto
  is a city located in Kumamoto Prefecture, Japan.Formed by the amalgamation of the towns of Kōshi and Nishigōshi on February 27, 2006, the city has an estimated population of 52,500 and a density of 987.39 persons per km². The total area is 53.17 km². It was the 14th "Great Heisei Merger" in...
  
   and Nishigoshi
  Nishigoshi, Kumamoto
  Nishigōshi was a town located in Kikuchi District, Kumamoto, Japan.On February 27, 2006 Nishigōshi was merged with the town of Kōshi, also from Kikuchi District, to form the new city of Kōshi and no longer exists as an independent municipality....
  
   from Kikuchi District
  Kikuchi District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.As of the Koshi merger but with 2003 population statistics, the district has an estimated population of 58,300 and a density of 427 persons per square kilometer...
  
   merged to form the city of Kōshi
  Koshi, Kumamoto
  is a city located in Kumamoto Prefecture, Japan.Formed by the amalgamation of the towns of Kōshi and Nishigōshi on February 27, 2006, the city has an estimated population of 52,500 and a density of 987.39 persons per km². The total area is 53.17 km². It was the 14th "Great Heisei Merger" in...
  
  .

• On March 1, 2006 - the towns of Kikusui
  Kikusui, Kumamoto
  Kikusui was a town located in Tamana District, Kumamoto Prefecture, Japan.On March 1, 2006 Kikusui was merged with the town of Mikawa, also from Tamana District, to form the new town of Nagomi and no longer exists as an independent municipality....
  
   and Mikawa
  Mikawa, Kumamoto
  Mikawa was a town located in Tamana District, Kumamoto Prefecture, Japan.On March 1, 2006 Mikawa was merged with the town of Kikusui, also from Tamana District, to form the new town of Nagomi and no longer exists as an independent municipality....
  
   from Tamana District
  Tamana District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the Tamana merger but with 2003 population estimates, the district has an estimated population of 47,029 and the density of 222 persons per square kilometer...
  
   merged to form the new town of Nagomi
  Nagomi, Kumamoto
  is a town located in Tamana District, Kumamoto Prefecture, Japan.The town was formed on March 1, 2006 from the merger of the towns of Kikusui and Mikawa, both from Tamana District....
  
  .

• On March 27, 2006 - the cities of Hondo
  Hondo, Kumamoto
  was a city located in Kumamoto, Japan.On March 27, 2006 Hondo was merged with the towns of Amakusa, Ariake, Goshoura, Itsuwa, Kawaura, Kuratake, Shinwa and Sumoto, all from Amakusa District, and the old city of Ushibuka, to become the new city of Amakusa and no longer exists as an independent...
  
   and Ushibuka
  Ushibuka, Kumamoto
  Ushibuka was a city located in Kumamoto, Japan.On March 27, 2006 Ushibuka was merged with the towns of Amakusa, Ariake, Goshoura, Itsuwa, Kawaura, Kuratake, Shinwa and Sumoto, all from Amakusa District, and the old city of Hondo, to become the new city of Amakusa and no longer exists as an...
  
   merged with the towns of Amakusa
  Amakusa, Kumamoto
  was a town located in Amakusa District, Kumamoto, Japan.Amakusa-machi consists of five villages, four spread along the west coast of Shimo-shima and one located in the mountains between the coast and Hondo, the administrative capital of Amakusa city. They are, in order of geographic location...
  
  , Ariake
  Ariake, Kumamoto
  was a town located in Amakusa District, Kumamoto, Japan.On March 27, 2006 Ariake was merged with the towns of Amakusa, Goshoura, Itsuwa, Kawaura, Kuratake, Shinwa and Sumoto, all from Amakusa District, and the old cities of Hondo and Ushibuka, to become the new city of Amakusa and no longer exists...
  
  , Goshoura
  Goshoura, Kumamoto
  was a town located in Amakusa District, Kumamoto, Japan.On March 27, 2006 Goshoura was merged with the towns of Amakusa, Ariake, Itsuwa, Kawaura, Kuratake, Shinwa and Sumoto, all from Amakusa District, and the old cities of Hondo and Ushibuka, to become the new city of Amakusa and no longer exists...
  
  , Itsuwa
  Itsuwa, Kumamoto
  was a town located in Amakusa District, Kumamoto, Japan.On March 27, 2006 Itsuwa was merged with the towns of Amakusa, Ariake, Goshoura, Kawaura, Kuratake, Shinwa and Sumoto, all from Amakusa District, and the old cities of Hondo and Ushibuka, to become the new city of Amakusa and no longer exists...
  
  , Kawaura
  Kawaura, Kumamoto
  Kawaura was a town located in Amakusa District, Kumamoto, Japan.On March 27, 2006 Kawaura was merged with the towns of Amakusa, Ariake, Goshoura, Itsuwa, Kuratake, Shinwa and Sumoto, all from Amakusa District, and the old cities of Hondo and Ushibuka, to become the new city of Amakusa and no...
  
  , Kuratake
  Kuratake, Kumamoto
  Kuratake was a town located in Amakusa District, Kumamoto, Japan.On March 27, 2006 Kuratake was merged with the towns of Amakusa, Ariake, Goshoura, Itsuwa, Kawaura, Shinwa and Sumoto, all from Amakusa District, and the old cities of Hondo and Ushibuka, to become the new city of Amakusa and no...
  
  , Shinwa
  Shinwa, Kumamoto
  Shinwa was a town located in Amakusa District, Kumamoto, Japan.On March 27, 2006 Shinwa was merged with the towns of Amakusa, Ariake, Goshoura, Itsuwa, Kawaura, Kuratake and Sumoto, all from Amakusa District, and the old cities of Hondo and Ushibuka, to become the new city of Amakusa and no longer...
  
   and Sumoto
  Sumoto, Kumamoto
  Sumoto was a town located in Amakusa District, Kumamoto, Japan.On March 27, 2006 Sumoto was merged with the towns of Amakusa, Ariake, Goshoura, Itsuwa, Kawaura, Kuratake and Shinwa, all from Amakusa District, and the old cities of Hondo and Ushibuka, to become the new city of Amakusa and no longer...
  
   (all from Amakusa District
  Amakusa District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the March 27, 2006 Amakusa merger the district consists of the single town of Reihoku. After the merger, the district has an estimated population of 9,105 and a density of 135.77 persons per km²...
  
  ) to form the new city of Amakusa
  Amakusa, Kumamoto
  was a town located in Amakusa District, Kumamoto, Japan.Amakusa-machi consists of five villages, four spread along the west coast of Shimo-shima and one located in the mountains between the coast and Hondo, the administrative capital of Amakusa city. They are, in order of geographic location...
  
  .

• On October 6, 2008 - the city of Kumamoto
  Kumamoto, Kumamoto
  is the capital city of Kumamoto Prefecture on the island of Kyushu, Japan. Greater Kumamoto has a population of 1,460,000, as of the 2000 census...
  
  absorbed the town of Tomiai
  Tomiai, Kumamoto
  was a town located in Shimomashiki District, Kumamoto, Japan.On October 6, 2008 Tomiai was merged into the expanded city of Kumamoto and no longer exists as an independent municipality....
  
   from Shimomashiki District
  Shimomashiki District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the March 23, 2010 Kumamoto merger the district consists of the single town of Misato. After the merger, the district has an estimated population of 11,164 and a density of 77.5 persons per square kilometer...
  
  .

• On March 23, 2010 - the city of Kumamoto
  Kumamoto, Kumamoto
  is the capital city of Kumamoto Prefecture on the island of Kyushu, Japan. Greater Kumamoto has a population of 1,460,000, as of the 2000 census...
  
  absorbed the town of Jōnan
  Jonan, Kumamoto
  was a town located in Shimomashiki District, Kumamoto, Japan.On March 23, 2010 Jōnan, along with the town of Ueki, from Kamoto District, was merged into the expanded city of Kumamoto and no longer exists as an independent municipality....
  
   from Shimomashiki District
  Shimomashiki District, Kumamoto
  is a district located in Kumamoto Prefecture, Japan.Following the March 23, 2010 Kumamoto merger the district consists of the single town of Misato. After the merger, the district has an estimated population of 11,164 and a density of 77.5 persons per square kilometer...
  
   and the town of Ueki
  Ueki, Kumamoto
  was a town located in Kamoto District, Kumamoto, Japan.On March 23, 2010 Ueki, along with the town of Jōnan, from Shimomashiki District, was merged into the expanded city of Kumamoto and no longer exists as an independent municipality....
  
   from Kamoto District
  Kamoto District, Kumamoto
  was a district located in Kumamoto Prefecture, Japan.As of 2003, the district had an estimated population of 31,088 and the density of 472.39 persons per square kilometer...
  
  . Kamoto District
  Kamoto District, Kumamoto
  was a district located in Kumamoto Prefecture, Japan.As of 2003, the district had an estimated population of 31,088 and the density of 472.39 persons per square kilometer...
  
  was dissolved with this merger.