[4] The station consists of a side platform serving a single track on a sidehill cutting.

From the station entrance on the access road, a flight of steps and a ramp lead up to the platform.

A small shed at the station entrance houses a ticket window which is, however, no longer staffed.

[6][7] In January 2015, JR Kyushu announced that Hizen-Koga would become an unstaffed station from 14 March 2015.

This was part of a major effort by the company to reduce its operating deficit by ceasing to staff 32 stations in its network.