Home Postcode finder NSW Duckenfield Duckenfield postcode NSW Duckenfield is a locality in New South Wales covered by postcode 2321. Postcode 2321 State or territory New South Wales (NSW) Region Hunter Add a free Duckenfield business listing Be the first listing in Duckenfield Common questionsWhat is the postcode for Duckenfield?Duckenfield, NSW has the postcode 2321.What state is Duckenfield in?Duckenfield is in New South Wales (NSW).Does postcode 2321 cover more than one suburb?Yes. Postcode 2321 covers 20 localities, so the postcode alone does not identify Duckenfield. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.