Home Postcodes by state WA Mount Budd Mount Budd postcode WA Mount Budd is a locality in Western Australia covered by postcode 6522. Postcode 6522 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Mount Budd business listing Be the first listing in Mount Budd Common questionsWhat is the postcode for Mount Budd?Mount Budd, WA has the postcode 6522.What state is Mount Budd in?Mount Budd is in Western Australia (WA).Does postcode 6522 cover more than one suburb?Yes. Postcode 6522 covers 10 localities, so the postcode alone does not identify Mount Budd. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.