Thornton Watlass is a village in North Yorkshire, England.
It is situated within the HG4 postcode district, which is within the Ripon post town.
HG4 is the only postcode district within the Ripon post town.
The Ripon post town is within the Harrogate postcode area.
Administrative Ward: Crakehall
Administrative District: Hambleton
Administrative County: North Yorkshire
Country: England
UK Parliament: Richmond (Yorks)
NHS Local Health Authority: Yorkshire and the Humber
NHS Region: North, Midlands and the East