wondabyne postcode nswst Home ›› Postcode Finder ›› NSWST ›› Wondabyne Wondabyne local listingsThe suburb of Wondabyne is located in NSW and has a postcode of 2256. Free wondabyne business listing! Get the first free listing in wondabyne! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.