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