Home Postcode finder NSW Matheson Matheson postcode NSW Matheson is a locality in New South Wales covered by postcode 2370. Postcode 2370 State or territory New South Wales (NSW) Region NSW North Coast Add a free Matheson business listing Be the first listing in Matheson Common questionsWhat is the postcode for Matheson?Matheson, NSW has the postcode 2370.What state is Matheson in?Matheson is in New South Wales (NSW).Does postcode 2370 cover more than one suburb?Yes. Postcode 2370 covers 24 localities, so the postcode alone does not identify Matheson. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.