Home Postcode finder TAS Exton Exton postcode TAS Exton is a locality in Tasmania covered by postcode 7303. Postcode 7303 State or territory Tasmania (TAS) Region Tasmania Add a free Exton business listing Be the first listing in Exton Common questionsWhat is the postcode for Exton?Exton, TAS has the postcode 7303.What state is Exton in?Exton is in Tasmania (TAS).Does postcode 7303 cover more than one suburb?Yes. Postcode 7303 covers 7 localities, so the postcode alone does not identify Exton. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.