Matsumoto Domain
The area of present-day Ikusaka was part of ancient Shinano Province and the name of "Omi" appears in the Kamakura period "Azuma kagami". The area was part of the holdings of Matsumoto Domain during the Edo period. The village of Ikusaka was established on April 1, 1889 by the establishment of the modern municipalities system. An attempt to merge with neighboring Chikuhoku was rejected by voters in 2004.