The Oaza Chiyohara was reorganized into five towns which were prefixed by the name 'Katsura' in 1931 (Chiyoharacho, Inuicho, Ushitoracho, Tatsumicho and Hitsujisaru-cho).
大字千代原は昭和6年、「桂」を冠称する5町（千代原町、乾町、艮町、巽町、坤町）に編成された。