* Annual estimated passenger usage based on sales of tickets in stated financial year(s) which end or originate at Westbury from Office of Rail Regulation statistics. Methodology may vary year on year.
In the 1880s, the station was one of the meeting places of the South and West Wilts Hunt.
In 1901, Westbury railway station was entirely rebuilt, creating two "island" platforms six hundred feet long and forty feet wide. It has since been rebuilt and remodelled several times, most recently when the area was resignalled in 1985 (when the Down Salisbury platform line was lifted), but without changing the underlying form created in 1901. A freight yard next to the station is used by bulk limestone trains from the rail-served quarries at Merehead and Whatley in Somerset
There is a service on the Cardiff Central to Southampton Central and Portsmouth Harbour line and a separate service between Gloucester, Bristol and Westbury on this route. Some of these trains continue through to Weymouth, and there are trains from Weymouth to Bristol & Gloucester. There are services to Frome, Warminster and Southampton plus through trains to and from Brighton.
There are also services run between Westbury and Swindon via Chippenham, Trowbridge and Melksham - these were upgraded substantially (eight trains each way weekdays, five on Sundays - up from two per day each weekday and one on Sundays) at the December 2013 timetable change.