mullewa postcode wa Home ›› Postcode Finder ›› WA ›› Mullewa Mullewa local listingsThe suburb of Mullewa is located in WA and has a postcode of 6630. Free mullewa business listing! 1Mullewa District High School58 Jose St 08 996111142Our Lady of Mt Carmel Primary School10 Doney St 08 99611120 View more business listings in mullewa Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.