Here is a list of mergers in Fukushima Prefecture, Japan since the Heisei era.

Mergers from April 1, 1999 to Present

On November 1, 2004 - the village of Kitaaizu (from Kitaaizu District) was merged into the expanded city of Aizuwakamatsu. Kitaaizu District was dissolved as a result of this merger.
On March 1, 2005 - the towns of Funehiki, Ōgoe, Takine and Tokiwa, and village of Miyakoji (all from Tamura District), were merged to create the city of Tamura.
On April 1, 2005 - the town of Naganuma, and the village of Iwase (both from Iwase District) were merged into the expanded city of Sukagawa.
On October 1, 2005 - the towns of Aizuhongō and Aizutakada, and the village of Niitsuru (all from Ōnuma District), were merged to create the town of Aizumisato.
On November 1, 2005 - the town of Kawahigashi (from Kawanuma District) was merged into the expanded city of Aizuwakamatsu.
On November 7, 2005 - the old city of Shirakawa absorbed the villages of Higashi, Omotegō and Taishin (all from Nishishirakawa District) to create the new and expanded city of Shirakawa.
On December 1, 2005 - the old city of Nihonmatsu absorbed the towns of Adachi, Iwashiro and Tōwa (all from Adachi District) to create the new and expanded city of Nihonmatsu.
On January 1, 2006 - the towns of Date absorbed the towns of Hobara, Ryōzen, Tsukidate and Yanagawa (all from Date District) to create the city of Date.
On January 1, 2006 - the city of Haramachi merged with the towns of Kashima and Odaka (both from Sōma District) to create the city of Minamisōma.
On January 4, 2006 - the towns of Shiokawa and Yamato, and the villages of Atsushiokanō and Takasato (all from Yama District) were merged into the expanded city of Kitakata.
On March 20, 2006 - the town of Tajima, and the villages of Ina, Nangō and Tateiwa (all from Minamiaizu District) were merged to create the town of Minamiaizu.
On January 1, 2007 - the former town of Motomiya absorbed the village of Shirasawa (both from Adachi District) to create the city of Motomiya.
On July 1, 2008 - the town of Iino (from Date District) was merged into the expanded city of Fukushima.

Planned/Future Mergers

v t e Fukushima Prefecture
Fukushima (capital)
Core cities	Fukushima Iwaki Kōriyama
Cities	Aizuwakamatsu Date Kitakata Minamisōma Motomiya Nihonmatsu Shirakawa Sōma Sukagawa Tamura
Districts	Adachi District Ōtama Date District Kawamata Koori Kunimi Futaba District Futaba Hirono Namie Naraha Ōkuma Tomioka Katsurao Kawauchi Higashishirakawa District Hanawa Tanagura Yamatsuri Samegawa Ishikawa District Asakawa Furudono Ishikawa Hirata Tamakawa Iwase District Kagamiishi Ten-ei Kawanuma District Aizubange Yanaizu Yugawa Minamiaizu District Minamiaizu Shimogō Tadami Hinoemata Nishishirakawa District Yabuki Izumizaki Nakajima Nishigō Ōnuma District Aizumisato Kaneyama Mishima Shōwa Sōma District Shinchi Iitate Tamura District Miharu Ono Yama District Bandai Inawashiro Nishiaizu Kitashiobara
List of mergers in Fukushima Prefecture Regions Aizu Hamadōri Nakadōri