Home Postcode finder WA Boyatup Boyatup postcode WA Boyatup is a locality in Western Australia covered by postcode 6450. Postcode 6450 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Boyatup business listing Be the first listing in Boyatup Common questionsWhat is the postcode for Boyatup?Boyatup, WA has the postcode 6450.What state is Boyatup in?Boyatup is in Western Australia (WA).Does postcode 6450 cover more than one suburb?Yes. Postcode 6450 covers 23 localities, so the postcode alone does not identify Boyatup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.