Home Postcode finder QLD Emerald Emerald postcode QLD Emerald is a locality in Queensland covered by postcode 4720. Postcode 4720 State or territory Queensland (QLD) Region Central QLD Add a free Emerald business listing More business listings in Emerald Businesses in EmeraldAAA Digital Antennas38 Pritchard Rd, Emerald QLD, Australia · 0416235609Capricornia School of Distance Education26 Gladstone St · 07 49874155Denison State School16 Gray St · 07 49875960 Common questionsWhat is the postcode for Emerald?Emerald, QLD has the postcode 4720.What state is Emerald in?Emerald is in Queensland (QLD).Does postcode 4720 cover more than one suburb?Yes. Postcode 4720 covers 2 localities, so the postcode alone does not identify Emerald. Browse other postcodes in Queensland, or widen the search to every Australian postcode.