Toongabbie station opened on 26 April 1880.[3] The station was a small, unattended conditional stopping place. The first platform was on the northern side of the track.[4] When the line was duplicated in March 1886, an additional platform was added on the south side of the tracks. A disc on the end of a five-foot pole was held up by intending passengers to stop the train.[4]
The “Toongabbee” station is listed on the 2nd subdivision of the Darcyville estate in 1886,[5] part of the estate of the late D'Arcy Wentworth, which stretched from Toongabbie to Westmead.
The station was rebuilt in the 1940s when the Main Western line was quadrupled.[6] In 2018, work was completed on an accessibility upgrade which like its neighbouring stations Pendle Hill and Wentworthville included a new concourse, footbridge and lifts as part of the Station Accessibility Upgrade Program.[7]