Mimasaka

Weekday departures: 36/day · Sat & holiday departures: 36/day

First / last departure (weekday): 6:35 / 23:18

Busiest hour: 13:00–14:00 (4)

0:00 ─ 23:00

Figures are typical departures in the timetable data, not a live service count.

Timetable data as of 2 May 2026.

• Sasebo Line: Nagao (Saga) ⇄ Kami-Arita

Mimasaka Station opened on 10 July 1897 as a station of the private Kyushu Railway. The Kyushu Railway was nationalised on 1 July 1907 and the station came under Japanese Government Railways. Cargo handling was abolished on 1 April 1973 and parcel handling on 20 September 1982. The station became briefly unstaffed around January 1983. With the breakup and privatisation of JNR on 1 April 1987, the station passed to JR Kyushu. It was made unstaffed again on 26 March 2016. The SUGOCA IC card became usable here on 3 October 2024.

Mimasaka is a ground-level station with two opposed side platforms (tracks 1 and 3) connected by a footbridge, and retains a wooden station building. Local trains normally depart from track 1; track 3 is used by down trains only when trains pass each other here. A central siding between the platforms is normally idle but is used for the operational stop of the JR Kyushu sightseeing train "36 plus 3" and for stabling some extra "Relay Kamome" services.