Home Postcode finder WA Ferguson Ferguson postcode WA Ferguson is a locality in Western Australia covered by postcode 6236. Postcode 6236 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Ferguson business listing Be the first listing in Ferguson Common questionsWhat is the postcode for Ferguson?Ferguson, WA has the postcode 6236.What state is Ferguson in?Ferguson is in Western Australia (WA).Does postcode 6236 cover more than one suburb?Yes. Postcode 6236 covers 8 localities, so the postcode alone does not identify Ferguson. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.