Home Postcode finder WA Bonnie Rock Bonnie Rock postcode WA Bonnie Rock is a locality in Western Australia covered by postcode 6479. Postcode 6479 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Bonnie Rock business listing Be the first listing in Bonnie Rock Common questionsWhat is the postcode for Bonnie Rock?Bonnie Rock, WA has the postcode 6479.What state is Bonnie Rock in?Bonnie Rock is in Western Australia (WA).Does postcode 6479 cover more than one suburb?Yes. Postcode 6479 covers 9 localities, so the postcode alone does not identify Bonnie Rock. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.