Koboro Station opened on September 30, 1943 and its classification changed in December of 1967, and was later given the status of half station.
The station opened on September 30, 1943 as Koboro Yard (Koboro shingojo). The classification was changed on October 1, 1967 to Koboro Provisional Stop (Koboro kari-jokojo). It was given the status of full station and named Koboro Station on April 1, 1987 when JR Hokkaido was established. 
