greenmount postcode wa Home ›› Postcode Finder ›› WA ›› Greenmount Greenmount local listingsThe suburb of Greenmount is located in WA and has a postcode of 6056. Free greenmount business listing! 1St Anthony's School96 Innamincka Rd 08 925511332Greenmount Primary School50-68 Innamincka Rd 08 92941155 View more business listings in greenmount Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.