The station was opened by the District Railway (DR, now the District line) on 21 July 1884. The station was originally named Hounslow Barracks in reference to the Cavalry Barracks, Hounslow south of the station on Beavers Lane. The station was the terminus of a single track branch line extension from the DR's existing route to Hounslow Town station (now closed) on Hounslow High Street. In 'My Early Life', Winston Churchill recalls travelling on the Underground Railway to Hounslow Barracks two or three times a week whilst living at his mother's house in Knightsbridge around 1896. Piccadilly line services, which had been running as far as Northfields since January 1933, were extended to Hounslow West on 13 March 1933. From that date, the branch was operated jointly by both lines, but District line services (which had more capacious higher carriages) were progressively reduced to just rush-hour services in the late 1950s and withdrawn on 9 October 1964
During 1930 and 1931 a new station building was constructed facing on to Bath Road to replace the original building which was parallel with the tracks and set back at an angle from the road. The new building, by the Underground's architect Stanley Heaps in conjunction with Charles Holden in a style reminiscent of Holden's designs for the 1926 Morden extension of the City and South London Railway (now part of the Northern line), was constructed in Portland stone and features a tall heptagonal ticket hall with glazed screens to all sides. It is located on Bath Road (A3006) about 600m from its junction with A4 Great West Road and Great South West Road (A30). The station has an island platform reached by stairs. There is step-free access for wheelchair users only. The station has payphones and a car park.
Connections: London Bus routes 81, 203, 222, 482, H28, H32, H91 and H98 and night route N9 serve the station.