Home Postcode finder WA South Kununoppin South Kununoppin postcode WA South Kununoppin is a locality in Western Australia covered by postcode 6489. Postcode 6489 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free South Kununoppin business listing Be the first listing in South Kununoppin Common questionsWhat is the postcode for South Kununoppin?South Kununoppin, WA has the postcode 6489.What state is South Kununoppin in?South Kununoppin is in Western Australia (WA).Does postcode 6489 cover more than one suburb?Yes. Postcode 6489 covers 3 localities, so the postcode alone does not identify South Kununoppin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.