Home Postcode finder NSW Gundaroo Gundaroo postcode NSW Gundaroo is a locality in New South Wales covered by postcode 2620. Postcode 2620 State or territory New South Wales (NSW) Region Canberra Add a free Gundaroo business listing More business listings in Gundaroo Businesses in GundarooGundaroo Public SchoolLot St · 02 62368115 Common questionsWhat is the postcode for Gundaroo?Gundaroo, NSW has the postcode 2620.What state is Gundaroo in?Gundaroo is in New South Wales (NSW).Does postcode 2620 cover more than one suburb?Yes. Postcode 2620 covers 29 localities, so the postcode alone does not identify Gundaroo. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.