Home Postcode finder QLD Clarendon Clarendon postcode QLD Clarendon is a locality in Queensland covered by postcode 4311. Postcode 4311 State or territory Queensland (QLD) Region Western Suburbs Add a free Clarendon business listing Be the first listing in Clarendon Common questionsWhat is the postcode for Clarendon?Clarendon, QLD has the postcode 4311.What state is Clarendon in?Clarendon is in Queensland (QLD).Does postcode 4311 cover more than one suburb?Yes. Postcode 4311 covers 17 localities, so the postcode alone does not identify Clarendon. Browse other postcodes in Queensland, or widen the search to every Australian postcode.