It is in Cadogan Close and spans the boundary between the London Borough of Harrow and the London Borough of Ealing, with a footbridge connecting the north side (leading to Roxeth and South Harrow) to the south side (leading to Northolt and Greenford).

The Great Central Railway line to High Wycombe from Marylebone opened in 1906 but this station (originally known as South Harrow and Roxeth) was not opened until 1926, being given its current name in 1929.

[2] All services at Northolt Park are operated by Chiltern Railways.

The typical weekday off-peak service is one train per hour in each direction between London Marylebone and High Wycombe, with additional services calling at the station during the peak hours.

[3] On weekends, northbound services are extended beyond High Wycombe to and from Aylesbury via Princes Risborough.