 Historically part of the Municipal Borough of Acton in the county of Middlesex, it has formed part of the London Borough of Ealing since 1965.It is primarily within the London W3 postal district, although the northern, mainly industrial part of the area is covered by NW10 and overlaps with neighbouring Park Royal, essentially as a satellite region.Park Royal, which is heavily associated with North Acton, and forms part of the same ecclesiastical parish, falls under the NW10 postcode area.