It was built in 1857 by the Coleford, Monmouth, Usk and Pontypool Railway and was used by several other branch lines as the local rail network expanded.

The station closed in January 1964 following the closure of the last two lines to the station, the Wye Valley Railway and the Ross and Monmouth Railway.

Monmouth Troy was built for the Coleford, Monmouth, Usk and Pontypool Railway near to Troy House, and opened on 12 October 1857.

[1] Monmouth Troy also had a large goods yard; this was constructed at the same time as the station, and outlived it by nine months until October 1964 when its non-rail depot closed.

[1] The short tunnel directly to the west of the station that took the railway beneath Gibraltar Hill was called Monmouth Troy tunnel.