goonumbla postcode nswst Home ›› Postcode Finder ›› NSWST ›› Goonumbla Goonumbla local listingsThe suburb of Goonumbla is located in NSW and has a postcode of 2870. Free goonumbla business listing! Get the first free listing in goonumbla! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.