Home Postcode finder WA Mount Elphinstone Mount Elphinstone postcode WA Mount Elphinstone is a locality in Western Australia covered by postcode 6330. Postcode 6330 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Mount Elphinstone business listing Be the first listing in Mount Elphinstone Common questionsWhat is the postcode for Mount Elphinstone?Mount Elphinstone, WA has the postcode 6330.What state is Mount Elphinstone in?Mount Elphinstone is in Western Australia (WA).Does postcode 6330 cover more than one suburb?Yes. Postcode 6330 covers 50 localities, so the postcode alone does not identify Mount Elphinstone. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.