Home Postcode finder TAS Blue Rocks Blue Rocks postcode TAS Blue Rocks is a locality in Tasmania covered by postcode 7255. Postcode 7255 State or territory Tasmania (TAS) Region Tasmania Add a free Blue Rocks business listing Be the first listing in Blue Rocks Common questionsWhat is the postcode for Blue Rocks?Blue Rocks, TAS has the postcode 7255.What state is Blue Rocks in?Blue Rocks is in Tasmania (TAS).Does postcode 7255 cover more than one suburb?Yes. Postcode 7255 covers 14 localities, so the postcode alone does not identify Blue Rocks. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.