It is located along the Kouvola–Iisalmi railway,[2] and its neighboring stations are Kouvola in the south and Mikkeli in the north.

[4] The Finnish Heritage Agency has declared the Mäntyharju station area a protected culture site of national importance.

[5] Mäntyharju is served by long-distance services (InterCity and Pendolino) that pass through the Kouvola-Iisalmi line.

[6] Mäntyharju railway station has two platform tracks and the passenger trains that stop at the station mainly use track 2.

[7] This article about a Finnish railway station is a stub.