History
Iwatsuki Station opened on 17 November 1929 as Iwatsukichō Station of the Hokusō Railway's Noda Line when service began between Kasukabe and Ōmiya (temporary terminus); five days later the company became Sōbu Railway. In August 1938 the Bushū Railway, which crossed the Noda Line nearby and operated its own "Iwatsuki Station" about 1 km east, ceased operations, and the present station took the simple name Iwatsuki on 10 June 1939. Sōbu Railway was absorbed by Tōbu Railway in March 1944. Departure melodies started in April 2008, station numbering TD 06 was added in March 2011, and an overhead station building with a free east-west passage opened in stages between 24 May and 31 May 2016.
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
Until August 1938 a separate "Iwatsuki Station" operated about 1 km east on the now-defunct Bushū Railway, which crossed the Noda Line nearby.