Home Postcode finder TAS Underwood Underwood postcode TAS Underwood is a locality in Tasmania covered by postcode 7268. Postcode 7268 State or territory Tasmania (TAS) Region Tasmania Add a free Underwood business listing Be the first listing in Underwood Common questionsWhat is the postcode for Underwood?Underwood, TAS has the postcode 7268.What state is Underwood in?Underwood is in Tasmania (TAS).Does postcode 7268 cover more than one suburb?Yes. Postcode 7268 covers 3 localities, so the postcode alone does not identify Underwood. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.