Home Postcode finder QLD Mulambin Mulambin postcode QLD Mulambin is a locality in Queensland covered by postcode 4703. Postcode 4703 State or territory Queensland (QLD) Region Central QLD Add a free Mulambin business listing Be the first listing in Mulambin Common questionsWhat is the postcode for Mulambin?Mulambin, QLD has the postcode 4703.What state is Mulambin in?Mulambin is in Queensland (QLD).Does postcode 4703 cover more than one suburb?Yes. Postcode 4703 covers 30 localities, so the postcode alone does not identify Mulambin. Browse other postcodes in Queensland, or widen the search to every Australian postcode.