History
Sannohe Station opened on 1 September 1891 as 三ノ戸駅 (Sannohe Station, with a different kanji rendering) of the privately owned Nippon Railway. When Nippon Railway was nationalised on 1 November 1906, it became a station on the Tōhoku Main Line, and its name was rewritten to the present form (三戸駅) in 1907. Freight operations were discontinued in April 1962, baggage handling on 1 February 1984, and the station fell to Japanese National Railways' privatisation on 1 April 1987, transferring to East Japan Railway Company (JR East). On 1 December 2002 it transferred again to the third-sector Aoimori Railway Company on the Tōhoku Shinkansen's extension to Hachinohe, and on 12 March 2022 it became unstaffed.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
The town the station serves, Sannohe, lies on the opposite bank of the Mabechi River — the station building itself is in Nanbu, and passengers must cross the river to reach Sannohe town.