Home Postcode finder QLD Armstrong Creek Armstrong Creek postcode QLD Armstrong Creek is a locality in Queensland covered by postcode 4520. Postcode 4520 State or territory Queensland (QLD) Region Moreton Add a free Armstrong Creek business listing Be the first listing in Armstrong Creek Common questionsWhat is the postcode for Armstrong Creek?Armstrong Creek, QLD has the postcode 4520.What state is Armstrong Creek in?Armstrong Creek is in Queensland (QLD).Does postcode 4520 cover more than one suburb?Yes. Postcode 4520 covers 18 localities, so the postcode alone does not identify Armstrong Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.