Osaki

Known weekday departures: 1,216/day in the available timetable data · Known Sat & holiday departures: 563/day in the available timetable data

Earliest / latest departure in the available data (weekday): 4:28 / 24:24 (00:24 next day)

Busiest hour in the available data: 13:00–14:00 (83)

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 3 May 2026 (retrieved in spring/summer 2026).

The timetable data is incomplete for some or all lines at this station, so the weekday and Sat & holiday figures are departures in the available timetable data, not totals.

Lines where the timetable data is complete: JR Yamanote Line

Lines where the timetable data is incomplete:

• Rinkai Line: timetable data withheld pending licensing

• JR Yamanote Line: Shinagawa ⇄ Gotanda

Ōsaki Station opened on 25 February 1901 as a station of the Nippon Railway in Shinagawa, Tokyo. The line was nationalised on 1 November 1906 and the station became part of the Yamanote Line in October 1909. After serving the Yamanote Line alone for many decades, on 1 December 2002 new platforms opened on the west side to host Saikyō Line, Shōnan-Shinjuku Line and Rinkai Line services. Through-running with the Sōtetsu Line began on 30 November 2019. Platform-edge doors entered service on the Yamanote main platforms on 22 December 2012.

Unlike most stations served by multiple operators, Ōsaki places JR East and Tokyo Waterfront Area Rapid Transit services behind a single set of fare gates, so passengers can transfer between the two without exiting and re-entering.