* Annual estimated passenger usage based on sales of tickets in stated financial year(s) which end or originate at Cardiff Bay from Office of Rail Regulation statistics. Methodology may vary year on year.
Only one platform is now in use. The station building remains disused and is boarded up. The station building lies on Bute Street, although the rest of the station remains visible from the nearby Lloyd George Avenue. For various reasons, including it being the origin of the first steam-powered passenger train service in Wales, the station is a Grade II* listed building.
There is a shuttle service between Cardiff Queen Street and Cardiff Bay every 12 minutes Monday to Saturdays (between 0630 and 2330) and every 12 minutes on Sundays (between 1100 and 1630). The service was formerly operated by a Class 121 "bubble car", but this was withdrawn in June 2013.