Home Postcode finder QLD Harper Creek Harper Creek postcode QLD Harper Creek is a locality in Queensland covered by postcode 4552. Postcode 4552 State or territory Queensland (QLD) Region Sunshine Coast Add a free Harper Creek business listing Be the first listing in Harper Creek Common questionsWhat is the postcode for Harper Creek?Harper Creek, QLD has the postcode 4552.What state is Harper Creek in?Harper Creek is in Queensland (QLD).Does postcode 4552 cover more than one suburb?Yes. Postcode 4552 covers 14 localities, so the postcode alone does not identify Harper Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.