History
Hagiyama Station opened on 6 April 1928 as the terminus of a Tamako Railway line linking Moto-Kodaira with a new platform at Kokubunji; the surviving Hagiyama-Kokubunji section forms today's Seibu Tamako Line. The station was moved to its present location on 16 September 1958 to allow direct trains from Kodaira and central Tokyo to reach Tamako, severing the original Kokubunji-to-Kodaira through route. A 1962 spur added a connection to Haijima via Ogawa, creating the Seibu Haijima Line. A major refurbishment completed in 2009 installed lifts and an upgraded concourse, and station numbering in fiscal 2012 gave the stop two codes — SS30 and ST04.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Where the English and Japanese sources differ, this account follows the Japanese source.
Notes
A Seibu maintenance depot stands beside the station with on-site dormitories for staff, and an access path along the Tamako Line lets dormitory residents walk directly to the platforms without leaving railway property.