History
Shin-ōtsuka Station opened on 20 January 1954 as a Teito Rapid Transit Authority (TRTA) stop on the Marunouchi Line in Bunkyō Ward, Tokyo. Its original platforms were just 80 m long to handle four-car consists, but a planned 40 m extension toward Ikebukuro entered service on 22 September 1960 to accommodate six-car trains. Air-conditioning was added in summer 2001, control passed to Tokyo Metro upon TRTA's privatisation on 1 April 2004, platform doors began operation on 18 December 2006 and PASMO IC-card acceptance followed on 18 March 2007. Until 31 March 2011 passengers could only cross between platforms by exiting to the street; an inside-the-gates connecting passage opened that day, and the entrances were renamed North and South.
History summarized from Japanese & English Wikipedia · last reviewed 2026-06-09.
Notes
Refurbishment in the 2000s reinstated the original Marunouchi-Line sign-wave motif from the first-generation 500-series cars onto the lower side walls of each platform.