History
Shimonuma Station opened on 1926-09-25 as a general station, when Japanese Government Railways extended the Teshio Line between Horonobe and Kabutonuma. The Teshio Line was absorbed into the Sōya Main Line on 1930-04-01, and the station passed to Japanese National Railways in 1949. Freight handling ended in 1977, parcels in 1984, and the station was unstaffed from 1984-11-10. In July 1985 the old station building was replaced with a converted Yo 3500 brake-van structure. JR Hokkaido took over at the 1987-04-01 privatisation. Since April 2021 Horonobe Town has maintained the station, funded in part by furusato nōzei donations, citing its role as a gateway to the Sarobetsu wetlands.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
The station building was repainted in 2017 under Horonobe's My Station campaign in the colours of the town's mascot character, Numahikyon.