Home Postcode finder QLD North Stradbroke Island North Stradbroke Island postcode QLD North Stradbroke Island is a locality in Queensland covered by postcode 4183. Postcode 4183 State or territory Queensland (QLD) Region South Subs Add a free North Stradbroke Island business listing Be the first listing in North Stradbroke Island Common questionsWhat is the postcode for North Stradbroke Island?North Stradbroke Island, QLD has the postcode 4183.What state is North Stradbroke Island in?North Stradbroke Island is in Queensland (QLD).Does postcode 4183 cover more than one suburb?Yes. Postcode 4183 covers 5 localities, so the postcode alone does not identify North Stradbroke Island. Browse other postcodes in Queensland, or widen the search to every Australian postcode.