The original station site opened on 1 August 1871 as Woodford and was renamed in to Thornton in 1887 to avoid confusion with Woodford railway station in the Blue Mountains.[4][5] The line from Tarro was duplicated in 1880 and quadrupled on 10 February 1913 when the current station site opened.[3]
To the south-west of the station, the Bloomfield Colliery branches off.