Shimomaruko

Known weekday departures: 278/day · Known Sat & holiday departures: 251/day

First / last known departure (weekday): 5:23 / 24:37 (00:37 next day)

Busiest hour (known departures): 8:00–9:00 (23)

0:00 ─ 23:00

Figures are the departures known from the timetable data, not a count of today's actual service.

Timetable data as of 13 May 2026 (retrieved in spring/summer 2026).

• Tokyu Tamagawa Line: Unoki ⇄ Musashi-nitta

Shimo-Maruko Station opened on 2 May 1924 as a station on the Meguro-Kamata Electric Railway. The name derives from the station's original site in the lower portion of the historic Maruko Manor (Maruko-shō), in what was then Ebara-gun Yaguchi-mura Ōaza Shimo-Maruko. The station became unstaffed in October 1998 and is remotely operated from Kamata. On 6 August 2000 the Mekama Line was split into the Tōkyū Tamagawa Line and Tōkyū Meguro Line, making Shimo-Maruko a Tamagawa Line station; at the same time the station building was rebuilt with a futuristic high-ceiling steel frame, additional ticket gates were added, and the in-station level crossing was removed.

Canon's corporate headquarters stands among the facilities around Shimo-Maruko, and the commuter traffic generated by the large corporate offices in the Gas Bridge area makes the station the busiest intermediate (non-terminus) stop on the Tōkyū Tamagawa Line.