Home Postcode finder WA Arrowsmith Arrowsmith postcode WA Arrowsmith is a locality in Western Australia covered by postcode 6525. Postcode 6525 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Arrowsmith business listing Be the first listing in Arrowsmith Common questionsWhat is the postcode for Arrowsmith?Arrowsmith, WA has the postcode 6525.What state is Arrowsmith in?Arrowsmith is in Western Australia (WA).Does postcode 6525 cover more than one suburb?Yes. Postcode 6525 covers 12 localities, so the postcode alone does not identify Arrowsmith. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.