Home Postcode finder NSW Gouldsville Gouldsville postcode NSW Gouldsville 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 Gouldsville business listing Be the first listing in Gouldsville Common questionsWhat is the postcode for Gouldsville?Gouldsville, NSW has the postcode 2330.What state is Gouldsville in?Gouldsville 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 Gouldsville. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.