Home Postcode finder NSW Gowang Gowang postcode NSW Gowang is a locality in New South Wales covered by postcode 2357. Postcode 2357 State or territory New South Wales (NSW) Region NSW North Coast Add a free Gowang business listing Be the first listing in Gowang Common questionsWhat is the postcode for Gowang?Gowang, NSW has the postcode 2357.What state is Gowang in?Gowang is in New South Wales (NSW).Does postcode 2357 cover more than one suburb?Yes. Postcode 2357 covers 11 localities, so the postcode alone does not identify Gowang. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.