south-murchison postcode wa Home ›› Postcode Finder ›› WA ›› South-Murchison South Murchison local listingsThe suburb of South Murchison is located in WA and has a postcode of 6635. Free south murchison business listing! Get the first free listing in south murchison! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.