Arn Gill is a village in County Durham, England.
It is situated within the DL13 postcode district, which is within the Bishop Auckland post town.
The full list of postcode districts within the Bishop Auckland post town is as follows:
The Bishop Auckland post town is within the Darlington postcode area.
Administrative Ward: Barnard Castle East
Administrative District: County Durham
Country: England
UK Parliament: Bishop Auckland
NHS Local Health Authority: North East
NHS Region: North, Midlands and the East