The station opened on 15 February 1901 as Kaminoyama Station (上ノ山駅).[2] It was absorbed into the JR East network upon the privatization of JNR on 1 April 1987.[2] Kaminoyama Station was renamed Kaminoyama-Onsen Station on 1 July 1992, coinciding with the opening of the Yamagata Shinkansen.[2] A new station building was completed in June 2004.[citation needed]
Passenger statistics
In fiscal 2018, the station was used by an average of 1521 passengers daily (boarding passengers only).[3]