Harefield is a village in London, England.
It is situated within the UB9 postcode district, which is within the Uxbridge post town.
The full list of postcode districts within the Uxbridge post town is as follows:
The Uxbridge post town is within the Southall postcode area.
Administrative Ward: Harefield
Administrative District: Hillingdon
Country: England
UK Parliament: Ruislip, Northwood and Pinner
NHS Local Health Authority: London
NHS Region: London