Home Postcode finder WA South Carnarvon South Carnarvon postcode WA South Carnarvon is a locality in Western Australia covered by postcode 6701. Postcode 6701 State or territory Western Australia (WA) Region North West Suburbs Add a free South Carnarvon business listing Be the first listing in South Carnarvon Common questionsWhat is the postcode for South Carnarvon?South Carnarvon, WA has the postcode 6701.What state is South Carnarvon in?South Carnarvon is in Western Australia (WA).Does postcode 6701 cover more than one suburb?Yes. Postcode 6701 covers 28 localities, so the postcode alone does not identify South Carnarvon. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.