Home Postcode finder NSW Millbank Millbank postcode NSW Millbank is a locality in New South Wales covered by postcode 2440. Postcode 2440 State or territory New South Wales (NSW) Region NSW North Coast Add a free Millbank business listing Be the first listing in Millbank Common questionsWhat is the postcode for Millbank?Millbank, NSW has the postcode 2440.What state is Millbank in?Millbank is in New South Wales (NSW).Does postcode 2440 cover more than one suburb?Yes. Postcode 2440 covers 48 localities, so the postcode alone does not identify Millbank. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.