Home Postcode finder QLD Dolphin Heads Dolphin Heads postcode QLD Dolphin Heads is a locality in Queensland covered by postcode 4740. Postcode 4740 State or territory Queensland (QLD) Region Central QLD Add a free Dolphin Heads business listing Be the first listing in Dolphin Heads Common questionsWhat is the postcode for Dolphin Heads?Dolphin Heads, QLD has the postcode 4740.What state is Dolphin Heads in?Dolphin Heads 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 Dolphin Heads. Browse other postcodes in Queensland, or widen the search to every Australian postcode.