Home Postcode finder NSW Maison Dieu Maison Dieu postcode NSW Maison Dieu is a locality in New South Wales covered by postcode 2330. Postcode 2330 State or territory New South Wales (NSW) Region Hunter Add a free Maison Dieu business listing Be the first listing in Maison Dieu Common questionsWhat is the postcode for Maison Dieu?Maison Dieu, NSW has the postcode 2330.What state is Maison Dieu in?Maison Dieu is in New South Wales (NSW).Does postcode 2330 cover more than one suburb?Yes. Postcode 2330 covers 63 localities, so the postcode alone does not identify Maison Dieu. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.