South Heighton is a village in East Sussex, England.
It is situated within the BN9 postcode district, which is within the Newhaven post town.
BN9 is the only postcode district within the Newhaven post town.
The Newhaven post town is within the Brighton postcode area.
Administrative Ward: Ouse Valley and Ringmer
Administrative District: Lewes
Administrative County: East Sussex
Country: England
UK Parliament: Lewes
NHS Local Health Authority: South East Coast
NHS Region: Southern