:* yellow - areas formerly within the district borders during the early Meiji period
District Timeline • April 1, 1959 - The town of Shiojiri absorbed the villages of Kataoka, Hirooka, Souga and Chikumaji to form the city of
Shiojiri. • June 28, 1961 - The village of Seba was merged into the expanded city of
Shiojiri. • April 1, 1973 - The village of Hata gained town status. • May 1, 1974 - The village of Hongo was merged into the expanded city of
Matsumoto.
Recent mergers • April 1, 2005 - The village of
Shiga was merged into the expanded city of
Matsumoto. • October 1, 2005 - The town of
Akashina was merged with the towns of
Hotaka and
Toyoshina, and the villages of
Horigane and
Misato (all from
Minamiazumi District) to form the new city of
Azumino. • October 11, 2005 - The villages of
Honjō,
Sakakita and
Sakai merged to form the new village of
Chikuhoku. • March 31, 2010 - The town of
Hata was merged into the expanded city of
Matsumoto. ==Sister cities==