Home Postcode finder WA Trent Trent postcode WA Trent is a locality in Western Australia covered by postcode 6333. Postcode 6333 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Trent business listing Be the first listing in Trent Common questionsWhat is the postcode for Trent?Trent, WA has the postcode 6333.What state is Trent in?Trent is in Western Australia (WA).Does postcode 6333 cover more than one suburb?Yes. Postcode 6333 covers 17 localities, so the postcode alone does not identify Trent. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.