Home Postcode finder WA Mount Erin Mount Erin postcode WA Mount Erin is a locality in Western Australia covered by postcode 6532. Postcode 6532 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Mount Erin business listing Be the first listing in Mount Erin Common questionsWhat is the postcode for Mount Erin?Mount Erin, WA has the postcode 6532.What state is Mount Erin in?Mount Erin is in Western Australia (WA).Does postcode 6532 cover more than one suburb?Yes. Postcode 6532 covers 59 localities, so the postcode alone does not identify Mount Erin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.