Home Postcode finder QLD East Haldon East Haldon postcode QLD East Haldon is a locality in Queensland covered by postcode 4343. Postcode 4343 State or territory Queensland (QLD) Region Western Suburbs Add a free East Haldon business listing Be the first listing in East Haldon Common questionsWhat is the postcode for East Haldon?East Haldon, QLD has the postcode 4343.What state is East Haldon in?East Haldon is in Queensland (QLD).Does postcode 4343 cover more than one suburb?Yes. Postcode 4343 covers 24 localities, so the postcode alone does not identify East Haldon. Browse other postcodes in Queensland, or widen the search to every Australian postcode.