Home Postcode finder VIC Telopea Downs Telopea Downs postcode VIC Telopea Downs is a locality in Victoria covered by postcode 3420. Postcode 3420 State or territory Victoria (VIC) Region Vic Far Country Add a free Telopea Downs business listing Be the first listing in Telopea Downs Common questionsWhat is the postcode for Telopea Downs?Telopea Downs, VIC has the postcode 3420.What state is Telopea Downs in?Telopea Downs is in Victoria (VIC).Does postcode 3420 cover more than one suburb?Yes. Postcode 3420 covers 3 localities, so the postcode alone does not identify Telopea Downs. Browse other postcodes in Victoria, or widen the search to every Australian postcode.