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住民基本台帳人口移動報告年報 (in Japanese). 総務庁統計局. 2005. p. 139. Tokamachi-shi, Kawanishi-machi, Nakasato-mura, Matsudai-machi and Matsunoyama-machi were incorporated into a newly established Tokamachi-shi as of April 1, 2005.
"十日町市の沿革|十日町市". 十日町市 (in Japanese). Retrieved 2024-02-04. 十日町市は、平成17年4月1日に旧十日町市、川西町、中里村、松代町及び松之山町の5市町村が新設合併して誕生しました。