It is operated by JR Shikoku and is the junction of two branches of the Yosan Line and hence has two station numbers "U14" and "S18".

[2][5][6][3] The station was opened on 14 February 1918 as Ōzu, the terminus of the private Ehime Railway (愛媛鉄道, Ehime Tetsudō) a 762 mm (2 ft 6 in) light railway line starting from Wakamiya Junction (若宮連絡所, Wakamiya-renraku-sho), near Nagahama-machi (the present Iyo-Nagahama).

After the company was nationalized on 1 October 1933, Japanese Government Railways (JGR) took over the station.

On October 6, 1935, after the track had been re-gauged to 1,067 mm, the station became part of the Yosan Main Line.

[7][8] Media related to Iyo-Ozu Station at Wikimedia Commons Branches (via Uchiko Line)