Home Postcode finder WA Jacup Jacup postcode WA Jacup is a locality in Western Australia covered by postcode 6337. Postcode 6337 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Jacup business listing Be the first listing in Jacup Common questionsWhat is the postcode for Jacup?Jacup, WA has the postcode 6337.What state is Jacup in?Jacup is in Western Australia (WA).Does postcode 6337 cover more than one suburb?Yes. Postcode 6337 covers 5 localities, so the postcode alone does not identify Jacup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.