History
Tatsuokajō Station opened on 28 December 1915 as Onara Stop on the Saku Railway in what is now Saku, Nagano Prefecture. The Saku Railway was nationalised in September 1934, at which point Onara became a station of the Ministry of Railways' Koumi Kita Line, later folded into the Koumi Line. Operations were suspended in November 1944. The station reopened on 1 March 1952 between Usuda and Nakagomi under its current name. With the 1987 dissolution and privatisation of JNR it came under JR East. A waiting room shaped like a castle was added in December 1991, referencing the nearby Tatsuoka Castle star fort.
History summarized from Japanese & English Wikipedia · last reviewed 2026-06-09.
Notes
The platform waiting room is shaped like a castle to reference Tatsuoka Castle, a nearby star fort built in the 1860s.