Home Postcode finder WA Boilup Boilup postcode WA Boilup is a locality in Western Australia covered by postcode 6394. Postcode 6394 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Boilup business listing Be the first listing in Boilup Common questionsWhat is the postcode for Boilup?Boilup, WA has the postcode 6394.What state is Boilup in?Boilup is in Western Australia (WA).Does postcode 6394 cover more than one suburb?Yes. Postcode 6394 covers 8 localities, so the postcode alone does not identify Boilup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.