Meiji Era
� May 1, 1907-The town of Matsumoto gained city status alone.
Taish? Era
� February 1, 1925-The city absorbed the village of Matsumoto from Higashichikuma District.
Sh?wa Era
� April 1, 1943-The city absorbed the Kanda area in the village of Nakayama from Higashichikuma District.
� April 1, 1954-The city absorbed the villages of Nakayama, Shimadachi, and Shimauchi (all from Higashichikuma District).
� August 1, 1954-The city absorbed the villages of Wada, Niimura, Kanbayashi, Sasaga, Yoshikawa, Kotobuki, Okada, Iriyamabe, Satoyamabe, and Imai (all from Higashichikuma District).
� April 1, 1960-The city acquired the Kitauchida ward-excluding Gakenoyu area from village of Kataoka in Higashichikuma District from the city of Shiojiri.
� April 1, 1961-The city acquired the Gakenoyu area-Minamiuchida ward in the village of Kataoka in Higashichikuma District from the city of Shiojiri.
� May 1, 1974-The city absorbed the village of Hongo from Higashichikuma District.
� April 1, 1982-The city acquired parts of Seba area (Kukohigashi) from the city of Shiojiri.
Heisei Era
� Between the days of June 27 and June 28, 1994 - The Matsumoto Incident sarin gas attack occurred.
� November 1, 2000-Matsumoto became a Special City.
� January 2002-Matsumoto City Hall gained ISO 14001 rights.
� April 1, 2005-The city merged with the villages of Azumi, Nagawa, Azusagawa from Minamiazumi District, and the village of Shiga from Higashichikuma District to form the new city of Matsumoto. (Matsumoto officially absorbed all four villages without creating the new municipal organization)
� March
