It is situated directly across Rathburn Road West from the City Centre Transit Terminal (the main hub for local MiWay bus service and a stop on the Mississauga Transitway) and Square One Shopping Centre, after which the terminal is named.

[1] Routes stopping at the terminal include: off-peak bus service along the Milton GO Train corridor from downtown Toronto;[2] Mississauga to Finch Bus Terminal; Mississauga to Guelph; Hamilton to Richmond Hill; Highway 407 West routes; and routes connecting Waterloo Region to Greater Toronto.

The terminal includes public washrooms, an indoor waiting area, staffed ticket counters and 24-hour automated ticket vending machines.

[1] The terminal includes 193 parking spaces along Centre View Drive.

[3] Westbound platform assignments:[3] Eastbound platform assignments: Media related to Square One Bus Terminal at Wikimedia Commons