Koikawa Station began as  on September 30, 1944, and was elevated to a full station on the Japan National Railway (JNR), serving the town of Kado, Akita on February 1, 1950. It has been unattended since October 1971.
Koikawa Station started serving the town of Kado, Akita on September 30, 1944, and was officially recognized as a full station by the Japan National Railway (JNR) on February 1, 1950. Unfortunately, it has been without human attendance since October 1971.