Home Postcode finder QLD Gregory Downs Gregory Downs postcode QLD Gregory Downs is a locality in Queensland covered by postcode 4830. Postcode 4830 State or territory Queensland (QLD) Region North QLD Add a free Gregory Downs business listing More business listings in Gregory Downs Businesses in Gregory DownsGregory Educational FacilityMurray Ave · 07 47485652 Common questionsWhat is the postcode for Gregory Downs?Gregory Downs, QLD has the postcode 4830.What state is Gregory Downs in?Gregory Downs is in Queensland (QLD).Does postcode 4830 cover more than one suburb?Yes. Postcode 4830 covers 5 localities, so the postcode alone does not identify Gregory Downs. Browse other postcodes in Queensland, or widen the search to every Australian postcode.