Home Postcode finder NSW Merriwa Merriwa postcode NSW Merriwa is a locality in New South Wales covered by postcode 2329. Postcode 2329 State or territory New South Wales (NSW) Region Hunter Add a free Merriwa business listing More business listings in Merriwa Businesses in MerriwaMerriwa Central SchoolBow St · 02 65482119St Joseph's SchoolMarquet St · 02 65482035 Common questionsWhat is the postcode for Merriwa?Merriwa, NSW has the postcode 2329.What state is Merriwa in?Merriwa is in New South Wales (NSW).Does postcode 2329 cover more than one suburb?Yes. Postcode 2329 covers 3 localities, so the postcode alone does not identify Merriwa. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.