Home Postcode finder QLD White Rock White Rock postcode QLD White Rock is a locality in Queensland covered by postcode 4868. Postcode 4868 State or territory Queensland (QLD) Region North QLD Add a free White Rock business listing Be the first listing in White Rock Common questionsWhat is the postcode for White Rock?White Rock, QLD has the postcode 4868.What state is White Rock in?White Rock is in Queensland (QLD).Does postcode 4868 cover more than one suburb?Yes. Postcode 4868 covers 4 localities, so the postcode alone does not identify White Rock. Browse other postcodes in Queensland, or widen the search to every Australian postcode.