Home Postcode finder WA St Ronans St Ronans postcode WA St Ronans is a locality in Western Australia covered by postcode 6302. Postcode 6302 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free St Ronans business listing Be the first listing in St Ronans Common questionsWhat is the postcode for St Ronans?St Ronans, WA has the postcode 6302.What state is St Ronans in?St Ronans is in Western Australia (WA).Does postcode 6302 cover more than one suburb?Yes. Postcode 6302 covers 23 localities, so the postcode alone does not identify St Ronans. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.