History
Iwai Station opened on 10 August 1918 on what is now the Uchibō Line, in present-day Minamibōsō, Chiba Prefecture. The station lies 73.7 kilometres from the western terminus of the line at Soga. It became part of JR East with the 1 April 1987 privatisation of the Japan National Railways. The station is an at-grade stop with a single island platform connected to the station building by a footbridge, and remains staffed. The surrounding area, formerly the seat of Tomiyama Town, is served by National Route 127 and retains the old town hall building close to the station forecourt.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.