Home Postcode finder NSW Debenham Debenham postcode NSW Debenham is a locality in New South Wales covered by postcode 2446. Postcode 2446 State or territory New South Wales (NSW) Region NSW North Coast Add a free Debenham business listing Be the first listing in Debenham Common questionsWhat is the postcode for Debenham?Debenham, NSW has the postcode 2446.What state is Debenham in?Debenham is in New South Wales (NSW).Does postcode 2446 cover more than one suburb?Yes. Postcode 2446 covers 41 localities, so the postcode alone does not identify Debenham. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.