Home Postcode finder NSW Cumbalum Cumbalum postcode NSW Cumbalum is a locality in New South Wales covered by postcode 2478. Postcode 2478 State or territory New South Wales (NSW) Region NSW North Coast Add a free Cumbalum business listing Be the first listing in Cumbalum Common questionsWhat is the postcode for Cumbalum?Cumbalum, NSW has the postcode 2478.What state is Cumbalum in?Cumbalum is in New South Wales (NSW).Does postcode 2478 cover more than one suburb?Yes. Postcode 2478 covers 15 localities, so the postcode alone does not identify Cumbalum. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.