east-murchison postcode wa Home ›› Postcode Finder ›› WA ›› East-Murchison East Murchison local listingsThe suburb of East Murchison is located in WA and has a postcode of 6640. Free east murchison business listing! Get the first free listing in east murchison! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.