Home Postcodes by state QLD Redbank Creek Redbank Creek postcode QLD Redbank Creek is a locality in Queensland covered by postcode 4312. Postcode 4312 State or territory Queensland (QLD) Region Western Suburbs Add a free Redbank Creek business listing Be the first listing in Redbank Creek Common questionsWhat is the postcode for Redbank Creek?Redbank Creek, QLD has the postcode 4312.What state is Redbank Creek in?Redbank Creek is in Queensland (QLD).Does postcode 4312 cover more than one suburb?Yes. Postcode 4312 covers 13 localities, so the postcode alone does not identify Redbank Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.