Walwick is a village in Northumberland, England.
It is situated within the NE46 postcode district, which is within the Hexham post town.
The full list of postcode districts within the Hexham post town is as follows:
The Hexham post town is within the Newcastle upon Tyne postcode area.
Administrative Ward: Humshaugh
Administrative District: Northumberland
Country: England
UK Parliament: Hexham
NHS Local Health Authority: North East
NHS Region: North, Midlands and the East