Northiam is a village in East Sussex, England.
It is situated within the TN31 postcode district, which is within the Rye post town.
TN31 is the only postcode district within the Rye post town.
The Rye post town is within the Tonbridge postcode area.
Administrative Ward: Rother Levels
Administrative District: Rother
Administrative County: East Sussex
Country: England
UK Parliament: Bexhill and Battle
NHS Local Health Authority: South East Coast
NHS Region: Southern