Home Postcode finder WA Beermullah Beermullah postcode WA Beermullah is a locality in Western Australia covered by postcode 6503. Postcode 6503 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Beermullah business listing Be the first listing in Beermullah Common questionsWhat is the postcode for Beermullah?Beermullah, WA has the postcode 6503.What state is Beermullah in?Beermullah is in Western Australia (WA).Does postcode 6503 cover more than one suburb?Yes. Postcode 6503 covers 20 localities, so the postcode alone does not identify Beermullah. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.