Home Postcode finder NSW Trentham Cliffs Trentham Cliffs postcode NSW Trentham Cliffs is a locality in New South Wales covered by postcode 2738. Postcode 2738 State or territory New South Wales (NSW) Region Vic Far Country Add a free Trentham Cliffs business listing Be the first listing in Trentham Cliffs Common questionsWhat is the postcode for Trentham Cliffs?Trentham Cliffs, NSW has the postcode 2738.What state is Trentham Cliffs in?Trentham Cliffs is in New South Wales (NSW).Does postcode 2738 cover more than one suburb?Yes. Postcode 2738 covers 5 localities, so the postcode alone does not identify Trentham Cliffs. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.