west-casuarinas postcode wa Home ›› Postcode Finder ›› WA ›› West-Casuarinas West Casuarinas local listingsThe suburb of West Casuarinas is located in WA and has a postcode of 6630. Free west casuarinas business listing! Get the first free listing in west casuarinas! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.