Home Postcode finder NSW Cullenbone Cullenbone postcode NSW Cullenbone is a locality in New South Wales covered by postcode 2850. Postcode 2850 State or territory New South Wales (NSW) Region NSW Country West Add a free Cullenbone business listing Be the first listing in Cullenbone Common questionsWhat is the postcode for Cullenbone?Cullenbone, NSW has the postcode 2850.What state is Cullenbone in?Cullenbone is in New South Wales (NSW).Does postcode 2850 cover more than one suburb?Yes. Postcode 2850 covers 77 localities, so the postcode alone does not identify Cullenbone. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.