Home Postcode finder NSW Edderton Edderton postcode NSW Edderton is a locality in New South Wales covered by postcode 2333. Postcode 2333 State or territory New South Wales (NSW) Region Hunter Add a free Edderton business listing Be the first listing in Edderton Common questionsWhat is the postcode for Edderton?Edderton, NSW has the postcode 2333.What state is Edderton in?Edderton is in New South Wales (NSW).Does postcode 2333 cover more than one suburb?Yes. Postcode 2333 covers 14 localities, so the postcode alone does not identify Edderton. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.