south-newdegate postcode wa Home ›› Postcode Finder ›› WA ›› South-Newdegate South Newdegate local listingsThe suburb of South Newdegate is located in WA and has a postcode of 6355. Free south newdegate business listing! Get the first free listing in south newdegate! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.