Home Postcode finder QLD Riverton Riverton postcode QLD Riverton is a locality in Queensland covered by postcode 4385. Postcode 4385 State or territory Queensland (QLD) Region Toowoomba Region Add a free Riverton business listing Be the first listing in Riverton Common questionsWhat is the postcode for Riverton?Riverton, QLD has the postcode 4385.What state is Riverton in?Riverton is in Queensland (QLD).Does postcode 4385 cover more than one suburb?Yes. Postcode 4385 covers 10 localities, so the postcode alone does not identify Riverton. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in Queensland, or widen the search to every Australian postcode.