Home Postcode finder TAS Hayes Hayes postcode TAS Hayes is a locality in Tasmania covered by postcode 7140. Postcode 7140 State or territory Tasmania (TAS) Region Tasmania Add a free Hayes business listing Be the first listing in Hayes Common questionsWhat is the postcode for Hayes?Hayes, TAS has the postcode 7140.What state is Hayes in?Hayes 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 Hayes. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.