High Dyke is a village in County Durham, England.
It is situated within the DL12 postcode district, which is within the Barnard Castle post town.
DL12 is the only postcode district within the Barnard Castle post town.
The Barnard Castle post town is within the Darlington postcode area.
Administrative Ward: Barnard Castle West
Administrative District: County Durham
Country: England
UK Parliament: Bishop Auckland
NHS Local Health Authority: North East
NHS Region: North, Midlands and the East