Home Postcode finder WA Duranillin Duranillin postcode WA Duranillin is a locality in Western Australia covered by postcode 6393. Postcode 6393 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Duranillin business listing Be the first listing in Duranillin Common questionsWhat is the postcode for Duranillin?Duranillin, WA has the postcode 6393.What state is Duranillin in?Duranillin is in Western Australia (WA).Does postcode 6393 cover more than one suburb?Yes. Postcode 6393 covers 2 localities, so the postcode alone does not identify Duranillin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.