History
Ōimachi began as a Tōkaidō Main Line junction on 15 March 1901, gaining full station status on 20 December 1914 with the inauguration of the Keihin Line (today's Keihin-Tōhoku Line). The connecting Yamanote Line spur to Ōsaki ran from August 1901 until 16 April 1916. Meguro-Kamata Electric Railway's Ōimachi Line opened from here on 6 July 1927. The JNR station passed to JR East at privatisation on 1 April 1987. Atré Ōimachi opened with a new east-west free passage on 11 March 1993, and TWR's Rinkai Line station joined the complex on 1 December 2002 with the line's extension to Ōsaki.
History summarized from Japanese & English Wikipedia · last reviewed 2026-06-09.
Notes
Between 2011 and 2021, the Rinkai Line platforms used a rotating set of Shiki Theatre musical themes as departure melodies, including 'Beauty and the Beast', 'Under the Sea' and 'Memory' from Cats, while the nearby Shiki Natsu was their host theatre.