Home Postcode finder NSW Errowanbang Errowanbang postcode NSW Errowanbang is a locality in New South Wales covered by postcode 2791. Postcode 2791 State or territory New South Wales (NSW) Region NSW Country West Add a free Errowanbang business listing Be the first listing in Errowanbang Common questionsWhat is the postcode for Errowanbang?Errowanbang, NSW has the postcode 2791.What state is Errowanbang in?Errowanbang is in New South Wales (NSW).Does postcode 2791 cover more than one suburb?Yes. Postcode 2791 covers 2 localities, so the postcode alone does not identify Errowanbang. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.