Electric multiple-unit (EMU) trains operate under the Metlink brand through this station in both directions to Johnsonville (to the north) and to Wellington (to the south).

Raroa came into existence subsequent to electrification to serve the needs of the expanding population north of Wellington and was opened on 17 June 1940.

Because of transport licensing regulations under a 1931 Act of parliament that required rail to be used in preference to road to cart goods over certain distances if there was a rail option, livestock trains were run on the Johnsonville Branch to transport livestock to the railhead closest to the (then Council; now Taylor Preston) abattoir in Ngauranga Gorge.

Trains run in both directions through this station, departing at half-hourly intervals, supplemented by a 13/13/26 schedule at peak times on week days.

The train station is close to Raroa Intermediate and Onslow College; which can be reached by an overbridge and footpath to Burma Road.