Home Postcode finder QLD King Scrub King Scrub postcode QLD King Scrub is a locality in Queensland covered by postcode 4521. Postcode 4521 State or territory Queensland (QLD) Region Moreton Add a free King Scrub business listing Be the first listing in King Scrub Common questionsWhat is the postcode for King Scrub?King Scrub, QLD has the postcode 4521.What state is King Scrub in?King Scrub is in Queensland (QLD).Does postcode 4521 cover more than one suburb?Yes. Postcode 4521 covers 8 localities, so the postcode alone does not identify King Scrub. Browse other postcodes in Queensland, or widen the search to every Australian postcode.