Waterstock is a village in Oxfordshire, England.
It is situated within the HP18 postcode district, which is within the Aylesbury post town.
The full list of postcode districts within the Aylesbury post town is as follows:
The Aylesbury post town is within the Hemel Hempstead postcode area.
Administrative Ward: Long Crendon
Administrative District: Aylesbury Vale
Administrative County: Buckinghamshire
Country: England
UK Parliament: Henley
NHS Local Health Authority: South Central
NHS Region: Southern