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! 1Greenmount Primary School50-68 Innamincka Rd 08 929411552St Anthony's School96 Innamincka Rd 08 92551133 View more business listings in greenmount Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.