Home Postcode finder NSW Mayfield West Mayfield West postcode NSW Mayfield West is a locality in New South Wales covered by postcode 2304. Postcode 2304 State or territory New South Wales (NSW) Region Hunter Add a free Mayfield West business listing More business listings in Mayfield West Businesses in Mayfield WestBe Amazing Chiropractic4/12 Channel Road, Mayfield West NSW 2304, Australia · 0434812819Cash For Cars Newcastle50 Riverside Drive, Mayfield West NSW 2304, Australia · 02 8106 1145Dezigno Bathrooms17 Murray Dwyer Circuit, Mayfield West New South Wales 2304, Australia · 0416368587 Common questionsWhat is the postcode for Mayfield West?Mayfield West, NSW has the postcode 2304.What state is Mayfield West in?Mayfield West is in New South Wales (NSW).Does postcode 2304 cover more than one suburb?Yes. Postcode 2304 covers 7 localities, so the postcode alone does not identify Mayfield West. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.