History
Hatagaya Station is a Keio Corporation stop in Hatagaya 1-chōme, Shibuya ward, Tokyo, numbered KO03. The line of record is the Keio Line, but only Keio New Line trains call here. It opened on 11 November 1913 as a surface station of the Keio Electric Tramway, joined the wartime Tokyo Express combine on 31 May 1944, then passed to Keio Teito Electric Railway at its 1948 separation. On 31 October 1978 — when Shinjuku to Sasazuka was double-doubletracked — the platforms moved underground to the new Keio New Line corridor below Route 20, retiring the old Keio Line platforms. Through-running with the Toei Shinjuku Line followed on 16 March 1980, and station number KO03 arrived on 22 February 2013.
History summarized from Japanese & English Wikipedia · last reviewed 2026-06-09.
Where the English and Japanese sources differ, this account follows the Japanese source.
Notes
The Hatagaya name derives from a local legend that Minamoto no Yoshiie washed his clan's white banners in a nearby pond — "Hatagai-ike" — while passing through on the way to the Later Three Years' War.