Opened in 1856, it is owned and operated by Swiss Federal Railways (SBB CFF FFS).

[1] On the southern side of the station yard is the separate railway station Aarau WSB for the metre gauge trains of the Menziken–Aarau–Schöftland line of Aargau Verkehr AG (AVA).

Its infrastructure (its own station building, 2 platforms serving three tracks, no.

Aarau railway station is situated in the Bahnhofstrasse, at the south eastern edge of the old town.

As of the December 2023 timetable change,[update] the following services stop at Aarau:[3]