A station on the District Line in Travelcard Zone 3 1 July 1879. Known as Acton Green until 1887, Chiswick Park & Acton Green 1887-1910. The North London Line part of the London Overground crosses the Piccadilly/District lines close to Chiswick Park.
The Wikipedia page is [1] and the TfL page is [2]. Some information here and here.
See also Chiswick Station