History
Yamakoshi Station opened on 1903-11-03 as Yamakoshinai Station, a general station of the private Hokkaido Railway, when its Mori–Nepu section was completed. It was renamed Yamakoshi on 1904-10-15 to match the local district name. The line was nationalised in July 1907 and absorbed into the Hakodate Main Line on 1909-10-12. The Noda-oi–Yamakoshi section was double-tracked on 1969-08-29 and the Yamakoshi–Yakumo section on 1969-09-26. The building was rebuilt on 1920-09-08 and again on 1989-10-06. Freight handling ended in 1960, parcels in 1984, and the station was unstaffed from 1986-11-01. JR Hokkaido inherited it at the 1987 privatisation.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
Beside the platform stands a waiting room shaped like an Edo-period barrier (sekisho), built to honour the nearby ruins of a Tokugawa-era checkpoint and known locally as 'Japan's northernmost sekisho'.