Home Postcode finder TAS Cornwall Cornwall postcode TAS Cornwall is a locality in Tasmania covered by postcode 7215. Postcode 7215 State or territory Tasmania (TAS) Region Tasmania Add a free Cornwall business listing Be the first listing in Cornwall Common questionsWhat is the postcode for Cornwall?Cornwall, TAS has the postcode 7215.What state is Cornwall in?Cornwall is in Tasmania (TAS).Does postcode 7215 cover more than one suburb?Yes. Postcode 7215 covers 15 localities, so the postcode alone does not identify Cornwall. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.