greenmount postcode qldgu Home ›› Postcode Finder ›› QLDGU ›› Greenmount Greenmount local listingsThe suburb of Greenmount is located in QLD and has a postcode of 4751. Free greenmount business listing! 1Greenmount State School9-11 Haldon St 07 46971159 View more business listings in greenmount Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.