The station is served by the Sasebo Line and is located 21.5 km from the starting point of the line at Hizen-Yamaguchi.[3] Only local services on the Sasebo Line stop at this station.[4]
Station layout
The station consists of two side platforms serving two tracks (track 1 and track 3). Track 2 is a through-track which runs between the other two and a siding branches off track 1. The station building is a timber structure which used to house a ticket window but has become unstaffed and presently serves only as a waiting room. Access to the opposite side platform is by means of a footbridge.[3][2]
The private Kyushu Railway had opened a track from Tosu to Saga and Takeo (today Takeo-Onsen) by 5 May 1895. In the next phase of expansion, the track was extended further west with Haiki opening as the new western terminus on 10 July 1897. Mimasaka was opened on the same day as an intermediate station on the new track. When the Kyushu Railway was nationalized on 1 July 1907, Japanese Government Railways (JGR) took over control of the station. On 12 October 1909, track from Tosu through Mimasaka and Haiki to Nagasaki was designated the Nagasaki Main Line. On 1 December 1934, another route was given the designation Nagasaki Main Line and the official starting point of the Sasebo Line was moved from Haiki to Hizen-Yamaguchi. As such Mimasaka now became part of the Sasebo Line. With the privatization of Japanese National Railways (JNR), the successor of JGR, on 1 April 1987, control of the station passed to JR Kyushu.[5][6]
In fiscal 2020, the station was used by an average of 308 passengers daily (boarding passengers only), and it ranked 273rd among the busiest stations of JR Kyushu.[8]
^ ab"三間坂" [Mimasaka]. hacchi-no-he.net. Retrieved 24 March 2018.
^ abKawashima, Ryōzō (2013). 図説: 日本の鉄道 四国・九州ライン 全線・全駅・全配線・第5巻 長崎 佐賀 エリア [Japan Railways Illustrated. Shikoku and Kyushu. All lines, all stations, all track layouts. Volume 5 Nagasaki Saga area] (in Japanese). Kodansha. pp. 25, 71. ISBN9784062951647.
^"三間坂" [Mimasaka]. JR Kyushu official station website. Retrieved 24 March 2018.
^Ishino, Tetsu; et al., eds. (1998). 停車場変遷大事典 国鉄・JR編 [Station Transition Directory – JNR/JR] (in Japanese). Vol. I. Tokyo: JTB Corporation. pp. 22–3, 225, 227. ISBN4-533-02980-9.
^Ishino, Tetsu; et al., eds. (1998). 停車場変遷大事典 国鉄・JR編 [Station Transition Directory – JNR/JR] (in Japanese). Vol. II. Tokyo: JTB Corporation. p. 728. ISBN4-533-02980-9.
^"駅営業体制の見直しについて" [Revision of station sales system] (PDF). JR Kyushu. 25 February 2016. Archived from the original(PDF) on 5 March 2016. Retrieved 24 March 2018.
^各駅の乗車人員 (2020年度) [Station passenger figures (Fiscal 2020)] (PDF) (in Japanese). Japan: East Japan Railway Company. 2021. Retrieved 21 April 2023.