wittenoom-hills postcode wa Home ›› Postcode Finder ›› WA ›› Wittenoom-Hills Wittenoom Hills local listingsThe suburb of Wittenoom Hills is located in WA and has a postcode of 6447. Free wittenoom hills business listing! Get the first free listing in wittenoom hills! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.