Home Postcode finder NSW Namoi River Namoi River postcode NSW Namoi River is a locality in New South Wales covered by postcode 2346. Postcode 2346 State or territory New South Wales (NSW) Region NSW North Coast Add a free Namoi River business listing Be the first listing in Namoi River Common questionsWhat is the postcode for Namoi River?Namoi River, NSW has the postcode 2346.What state is Namoi River in?Namoi River is in New South Wales (NSW).Does postcode 2346 cover more than one suburb?Yes. Postcode 2346 covers 11 localities, so the postcode alone does not identify Namoi River. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.