Home Postcode finder NSW Mallee Mallee postcode NSW Mallee is a locality in New South Wales covered by postcode 2738. Postcode 2738 State or territory New South Wales (NSW) Region Vic Far Country Add a free Mallee business listing Be the first listing in Mallee Common questionsWhat is the postcode for Mallee?Mallee, NSW has the postcode 2738.What state is Mallee in?Mallee is in New South Wales (NSW).Does postcode 2738 cover more than one suburb?Yes. Postcode 2738 covers 5 localities, so the postcode alone does not identify Mallee. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.