Home Postcode finder QLD Alexandra Alexandra postcode QLD Alexandra is a locality in Queensland covered by postcode 4740. Postcode 4740 State or territory Queensland (QLD) Region Central QLD Add a free Alexandra business listing Be the first listing in Alexandra Common questionsWhat is the postcode for Alexandra?Alexandra, QLD has the postcode 4740.What state is Alexandra in?Alexandra is in Queensland (QLD).Does postcode 4740 cover more than one suburb?Yes. Postcode 4740 covers 50 localities, so the postcode alone does not identify Alexandra. Browse other postcodes in Queensland, or widen the search to every Australian postcode.