trentham-cliffs postcode nswst Home ›› Postcode Finder ›› NSWST ›› Trentham-Cliffs Trentham Cliffs local listingsThe suburb of Trentham Cliffs is located in NSW and has a postcode of 2738. Free trentham cliffs business listing! Get the first free listing in trentham cliffs! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.