When the station was rebuilt, a platform was constructed for Track C, which was originally a storage track of the Katsura train depot located adjacent to the station; since then the platform has been referred to as Platform C.
なお、C号線という呼称は、駅改築の際に隣接する桂車庫の留置線であるC号線にホームを設け、そのままのりばの呼称としたものである。