Union Square is located next to Aberdeen bus station.
Stagecoach Bluebird bus routes to the centre include: JET 727, X17, N17, 7, 7A, 7B, 7C, 7S, N7, X6, X7, 10, X10, 37, 35, X35, 201, 202, 203, 60, 61, 62, 62A, 67, 68, X60, X62, X67and X68.
First Aberdeen bus routes to the centre include: 3, 3G, 5, 12 and 27. These stop on Guild Street outside St Magnus House.
There are also three Park & Ride schemes to travel to the centre: Ellon, Kingswells and Bridge of Don.