Home Postcode finder TAS Derwent Bridge Derwent Bridge postcode TAS Derwent Bridge is a locality in Tasmania covered by postcode 7140. Postcode 7140 State or territory Tasmania (TAS) Region Tasmania Add a free Derwent Bridge business listing Be the first listing in Derwent Bridge Common questionsWhat is the postcode for Derwent Bridge?Derwent Bridge, TAS has the postcode 7140.What state is Derwent Bridge in?Derwent Bridge is in Tasmania (TAS).Does postcode 7140 cover more than one suburb?Yes. Postcode 7140 covers 48 localities, so the postcode alone does not identify Derwent Bridge. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.