Home Postcode finder QLD Oak Beach Oak Beach postcode QLD Oak Beach is a locality in Queensland covered by postcode 4877. Postcode 4877 State or territory Queensland (QLD) Region North QLD Add a free Oak Beach business listing Be the first listing in Oak Beach Common questionsWhat is the postcode for Oak Beach?Oak Beach, QLD has the postcode 4877.What state is Oak Beach in?Oak Beach is in Queensland (QLD).Does postcode 4877 cover more than one suburb?Yes. Postcode 4877 covers 6 localities, so the postcode alone does not identify Oak Beach. Browse other postcodes in Queensland, or widen the search to every Australian postcode.