History
Kojōhama Station opened on 1928-08-05 as a general station on the Ministry of Railways' Muroran Main Line. Freight handling ended on 1960-08-01, and parcels on 1980-05-15, when the station was unstaffed and placed under simple commission. The current station building was put up in January 1981, and JR Hokkaido inherited the station at the 1987 privatisation. The ground-level station has two staggered side platforms connected by a footbridge; the building stands on the up-line platform.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
The name Kojōhama uses the kanji for Japanese knotweed (kojō / itadori); the original Ainu place name kuttar-us-i meant 'place where Japanese knotweed grows thickly'.