Home Postcode finder QLD Knapp Creek Knapp Creek postcode QLD Knapp Creek is a locality in Queensland covered by postcode 4285. Postcode 4285 State or territory Queensland (QLD) Region Heathwood Add a free Knapp Creek business listing Be the first listing in Knapp Creek Common questionsWhat is the postcode for Knapp Creek?Knapp Creek, QLD has the postcode 4285.What state is Knapp Creek in?Knapp Creek is in Queensland (QLD).Does postcode 4285 cover more than one suburb?Yes. Postcode 4285 covers 33 localities, so the postcode alone does not identify Knapp Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.