Home Postcode finder WA North Boyanup North Boyanup postcode WA North Boyanup is a locality in Western Australia covered by postcode 6237. Postcode 6237 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free North Boyanup business listing Be the first listing in North Boyanup Common questionsWhat is the postcode for North Boyanup?North Boyanup, WA has the postcode 6237.What state is North Boyanup in?North Boyanup is in Western Australia (WA).Does postcode 6237 cover more than one suburb?Yes. Postcode 6237 covers 6 localities, so the postcode alone does not identify North Boyanup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.