and Nishitagawa Districts in Yamagata Prefecture) 1878 Murayama District (村山郡), Uzen (Split into Kitamurayama, Minamimurayama, Higashimurayama, and Nishimurayama Districts in Yamagata Prefecture) 1878 Okitama District (置賜郡), Uzen (Split into Higashiokitama, Nishiokitama, and Minamiokitama Districts in Yamagata Prefecture) 1878 Aizu District (会津郡), Iwashiro (Split into Kitaaizu and Minamiaizu Districts in Fukushima Prefecture) 1878 Shirakawa District (白川郡), Iwaki (Renamed to Higashishirakawa District in Fukushima Prefecture) 1878 Shirakawa District (白河郡), Iwaki (Renamed to Nishishirakawa District in Fukushima Prefecture) Kantō 1878 Ibaraki District (茨城郡), Hitachi (Split into Higashiibaraki and Nishiibaraki Districts in Ibaraki Prefecture) 1878 Tsuga District (都賀郡), Shimotsuke (Split into Kamitsuga and Shimotsuga Districts in Tochigi Prefecture) 1878 Gunma District (群馬郡), Kōzuke (Split into Higashigunma and Nishigunma Districts in Gunma Prefecture) 1878 Kanra District (甘楽郡), Kōzuke (Split into Kitakanra and Minamikanra Districts in Gunma Prefecture) 1878 Seta District (勢多郡), Kōzuke (Split into Kitaseta and Minamiseta Districts in Gunma Prefecture) 1878 Habu District (埴生郡), Kazusa (Renamed to Kamihabu District in Chiba Prefecture) 1878 Habu District (埴生郡), Shimōsa (Renamed to Shimohabu District in Chiba Prefecture) 1878 Sōma District (相馬郡), Shimōsa (Split into Kitasōma District in Ibaraki Prefecture and Minamisōma District in Chiba Prefecture) 1878 Katsushika District (葛飾郡), Shimōsa (Split into Nishikatsushika District in Ibaraki Prefecture, Nakakatsushika District in Saitama Prefecture, and Higashikatsushika District in Chiba Prefecture) 1878 Katsushika District (葛飾郡), Musashi (Split into Kitakatsushika District in Saitama Prefecture and Minamikatsushika District in Tokyo Prefecture) 1878 Saitama District (埼玉郡), Musashi (Split into Kitasaitama and Minamisaitama Districts in Saitama Prefecture) 1878 Adachi District (足立郡), Musashi (Split into Kitadachi District in Saitama Prefecture and Minamiadachi District in Tokyo Prefecture) 1878 Toshima District (豊嶋郡), Musashi (Split into Kitatoshima and Minamitoshima Districts in Tokyo Prefecture) 1878 Tama District (多摩郡), Musashi (Split into Higashitama District in Tokyo Prefecture, Kitatama, Minamitama, and Nishitama Districts in Kanagawa Prefecture; the latter 3 were transferred to Tokyo Prefecture in 1893) Chūbu 1878 Kanbara District (蒲原郡), Echigo (Split into Kitakanbara, Minamikanbara, Higashikanbara, Nishikanbara and Nakakanbara Districts, and the borough (-ku) of Niigata in Niigata Prefecture) 1878 Uonuma District (魚沼郡), Echigo (Split into Kitauonuma, Nakauonuma, and Minamiuonuma Districts in Niigata Prefecture) 1878 Kubiki District (頸城郡), Echigo (Split into Higashikubiki, Nakakubiki, and Nishikubiki Districts in Niigata Prefecture) 1878 Niikawa District (新川郡), Ecchu (Split into Kaminiikawa and Shimoniikawa Districts in Toyama Prefecture) 1878 Tsuru District (都留郡), Kai (Split into Kitatsuru and Minamitsuru Districts in Yamanashi Prefecture) 1878 Yamanashi District (山梨郡), Kai (Split into Higashiyamanashi and Nishiyamanashi Districts in Yamanashi