Home Postcode finder NSW Ringwood Ringwood postcode NSW Ringwood is a locality in New South Wales covered by postcode 2646. Postcode 2646 State or territory New South Wales (NSW) Region Canberra Add a free Ringwood business listing Be the first listing in Ringwood Common questionsWhat is the postcode for Ringwood?Ringwood, NSW has the postcode 2646.What state is Ringwood in?Ringwood is in New South Wales (NSW).Does postcode 2646 cover more than one suburb?Yes. Postcode 2646 covers 15 localities, so the postcode alone does not identify Ringwood. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.