greenbank postcode qld Home ›› Postcode Finder ›› QLD ›› Greenbank Greenbank local listingsThe suburb of Greenbank is located in QLD and has a postcode of 4124. Free greenbank business listing! 1Greenbank State School24-36 Goodna Rd 07 338032222 Safe Dig Vacuum Excavation21-29 Nuffield Rd. 0408 880 2623Black & White Pest ControlMiddle Rd 0732000288 View more business listings in greenbank Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.