Home Postcode finder WA Mollerin Mollerin postcode WA Mollerin is a locality in Western Australia covered by postcode 6475. Postcode 6475 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Mollerin business listing Be the first listing in Mollerin Common questionsWhat is the postcode for Mollerin?Mollerin, WA has the postcode 6475.What state is Mollerin in?Mollerin is in Western Australia (WA).Does postcode 6475 cover more than one suburb?Yes. Postcode 6475 covers 7 localities, so the postcode alone does not identify Mollerin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.