The station is located on the Hutt Valley section of the Wairarapa Line, 28.2 km (17.5 mi) north of Wellington.

The station is served by Metlink's electric multiple unit trains of the "Matangi" FP class.

Trains stopping at Heretaunga run to Wellington and Upper Hutt.

The station has an island platform between two tracks, linked by pedestrian overbridges to Bathurst Street and Maadi Place in the south, and pedestrian level crossings to Marion Street and Somme Road in the north.

[2] From 1941 to 1954, the Trentham Army Camp had a set of railway sidings used for freight and for troop trains, with a shunting locomotive owned by the Army.