Home Postcode finder WA Mettler Mettler postcode WA Mettler is a locality in Western Australia covered by postcode 6328. Postcode 6328 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Mettler business listing Be the first listing in Mettler Common questionsWhat is the postcode for Mettler?Mettler, WA has the postcode 6328.What state is Mettler in?Mettler is in Western Australia (WA).Does postcode 6328 cover more than one suburb?Yes. Postcode 6328 covers 8 localities, so the postcode alone does not identify Mettler. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.