History
Hiraoka Station opened on 26 April 1936 as Mitsushima Station, a stop on what is now the Iida Line in the village of Tenryū, Shimoina District, Nagano Prefecture. The station took its present name on 15 November 1952. It passed to Central Japan Railway Company (JR Central) at the privatisation of Japanese National Railways on 1 April 1987, and remains a staffed single-island-platform stop 93.8 kilometres from the line origin at Toyohashi Station. In fiscal 2016 the station handled an average of 64 boarding passengers per day, reflecting the sparsely populated Tenryū-river valley it serves.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
Hiraoka spent its first sixteen years under the name Mitsushima before being renamed in 1952.