It is the busiest county town railway station in the midlands region with up to 32 trains to Dublin (10 Non-Stop) and 30 trains from Dublin (9 Non-Stop) per day.

Portlaoise (formerly Maryborough) railway station opened on 26 June 1847.

The depot provides a high quality maintenance and servicing facility for the 183 intercity railcars and some facilities for outer suburban railcars serving the Dublin - Portlaoise route.

Station services include but not limited to parking on both sides of station, coffee served daily from 5am by “bloom coffee box” accessibility aids and much more

TFI Local Link routes 828, 850, and 858 serve the station providing links to locations such as Thurles, Roscrea, Cashel, Urlingford, Durrow and Abbeyleix and in the other direction to the Midland Regional Hospital, Portlaoise.