Home Postcode finder TAS Petcheys Bay Petcheys Bay postcode TAS Petcheys Bay is a locality in Tasmania covered by postcode 7109. Postcode 7109 State or territory Tasmania (TAS) Region Tasmania Add a free Petcheys Bay business listing Be the first listing in Petcheys Bay Common questionsWhat is the postcode for Petcheys Bay?Petcheys Bay, TAS has the postcode 7109.What state is Petcheys Bay in?Petcheys Bay is in Tasmania (TAS).Does postcode 7109 cover more than one suburb?Yes. Postcode 7109 covers 27 localities, so the postcode alone does not identify Petcheys Bay. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.