Swanwick is a village in Hampshire, England.
It is situated within the SO31 postcode district, which is within the Southampton post town.
The full list of postcode districts within the Southampton post town is as follows:
The Southampton post town is within the Southampton postcode area.
Administrative Ward: Sarisbury
Administrative District: Fareham
Administrative County: Hampshire
Country: England
UK Parliament: Fareham
NHS Local Health Authority: South Central
NHS Region: Southern