Home Postcode finder WA South Lake Grace South Lake Grace postcode WA South Lake Grace is a locality in Western Australia covered by postcode 6353. Postcode 6353 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free South Lake Grace business listing Be the first listing in South Lake Grace Common questionsWhat is the postcode for South Lake Grace?South Lake Grace, WA has the postcode 6353.What state is South Lake Grace in?South Lake Grace is in Western Australia (WA).Does postcode 6353 cover more than one suburb?Yes. Postcode 6353 covers 10 localities, so the postcode alone does not identify South Lake Grace. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.