Home Postcode finder QLD Haliday Bay Haliday Bay postcode QLD Haliday Bay is a locality in Queensland covered by postcode 4740. Postcode 4740 State or territory Queensland (QLD) Region Central QLD Add a free Haliday Bay business listing Be the first listing in Haliday Bay Common questionsWhat is the postcode for Haliday Bay?Haliday Bay, QLD has the postcode 4740.What state is Haliday Bay in?Haliday Bay is in Queensland (QLD).Does postcode 4740 cover more than one suburb?Yes. Postcode 4740 covers 50 localities, so the postcode alone does not identify Haliday Bay. Browse other postcodes in Queensland, or widen the search to every Australian postcode.