April 1, 2006 Naga District (那賀郡), Wakayama (The town of Iwade gained city status to become the city of Iwade) August 1, 2006 Higashiyatsushiro District (東八代郡), Yamanashi (The village of Ashigawa merged into the city of Fuefuki) October 1, 2006 Gunma District (群馬郡), Gunma (The town of Haruna merged into the city of Takasaki) January 22, 2007 Mitsu District (御津郡), Okayama (The town of Takebe merged into the city of Okayama) Akaiwa District (赤磐郡), Okayama (The town of Seto merged into the city of Okayama) January 29, 2007 Yamato District (山門郡), Fukuoka (The towns of Setaka and Yamakawa merged with the town of Takata from Miike District to form the city of Miyama) Miike District (三池郡), Fukuoka (The town of Takata merged with the towns of Yamakawa and Setaka from Yamato District to form the city of Miyama) March 11, 2007 Tsukui District (津久井郡), Kanagawa (The towns of Shiroyama and Fujino merged into the city of Sagamihara) October 1, 2007 Saga District (佐賀郡), Saga (The towns of Kawasoe, Kubota, and Higashiyoga merged into the city of Saga) December 1, 2007 Kawanabe District (川辺郡), Kagoshima (The towns of Kawanabe and Chiran merged with the town of Ei from Ibusuki District to form the city of Minamikyūshū) Ibusuki District (揖宿郡), Kagoshima (The town of Ei merged with the towns of Kawanabe and Chiran from Kawanabe District to form the city of Minamikyūshū) March 21, 2008 Mine District (美祢郡), Yamaguchi (The towns of Mitō and Shūhō merged with the city of Mine to form the city of Mine) November 1, 2008 Ihara District (庵原郡), Shizuoka (The town of Yui merged into the city of Shizuoka, the town of Fujikawa merged into the city of Fuji) Isa District (伊佐郡), Kagoshima (The town of Hishikari merged with the city of Ōkuchi to form the city of Isa) January 1, 2009 Shida District (志太郡), Shizuoka (The town of Okabe merged into the city of Fujieda) March 30, 2009 Minaminaka District (南那珂郡), Miyazaki (The towns of Kitagō and Nangō merged with the city of Nichinan to form the city of Nichinan) May 5, 2009 Seta District (勢多郡), Gunma (The village of Fujimi merged into the city of Maebashi) January 1, 2010 Higashiazai District (東浅井郡), Shiga (The towns of Torahime and Kohoku merged into the city of Nagahama) Ika District (伊香郡), Shiga (The towns of Takatsuki, Kinomoto, Yogo, and Nishiazai merged into the city of Nagahama) Itoshima District