Home Postcode finder TAS Tewkesbury Tewkesbury postcode TAS Tewkesbury is a locality in Tasmania covered by postcode 7321. Postcode 7321 State or territory Tasmania (TAS) Region Tasmania Add a free Tewkesbury business listing Be the first listing in Tewkesbury Common questionsWhat is the postcode for Tewkesbury?Tewkesbury, TAS has the postcode 7321.What state is Tewkesbury in?Tewkesbury is in Tasmania (TAS).Does postcode 7321 cover more than one suburb?Yes. Postcode 7321 covers 35 localities, so the postcode alone does not identify Tewkesbury. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.