Home Postcode finder QLD Gilbert River Gilbert River postcode QLD Gilbert River is a locality in Queensland covered by postcode 4871. Postcode 4871 State or territory Queensland (QLD) Region North QLD Add a free Gilbert River business listing Be the first listing in Gilbert River Common questionsWhat is the postcode for Gilbert River?Gilbert River, QLD has the postcode 4871.What state is Gilbert River in?Gilbert River is in Queensland (QLD).Does postcode 4871 cover more than one suburb?Yes. Postcode 4871 covers 103 localities, so the postcode alone does not identify Gilbert River. Browse other postcodes in Queensland, or widen the search to every Australian postcode.