wapengo postcode nswst Home ›› Postcode Finder ›› NSWST ›› Wapengo Wapengo local listingsThe suburb of Wapengo is located in NSW and has a postcode of 2550. Free wapengo business listing! Get the first free listing in wapengo! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.