During the Edo period, Itabashi-shuku flourished as one of the four post stations in Edo and spread out over two kilometers from north to south. From the north of Tokyo, it was divided into three sections: Kami-shuku (上宿), Naka-shuku (中宿) and Hirao-shuku (平尾宿). Kami-shuku and Naka-shuku were bounded by Itabashi, a bridge spanning the Shakujii River. The honjin and the toiya were located in Naka-shuku. The borders of Hirao-shuku spread until the vicinity of Kanmei-ji.