Home Postcode finder VIC Barwon Downs Barwon Downs postcode VIC Barwon Downs is a locality in Victoria covered by postcode 3243. Postcode 3243 State or territory Victoria (VIC) Region Vic Far Country Add a free Barwon Downs business listing Be the first listing in Barwon Downs Common questionsWhat is the postcode for Barwon Downs?Barwon Downs, VIC has the postcode 3243.What state is Barwon Downs in?Barwon Downs is in Victoria (VIC).Does postcode 3243 cover more than one suburb?Yes. Postcode 3243 covers 4 localities, so the postcode alone does not identify Barwon Downs. Browse other postcodes in Victoria, or widen the search to every Australian postcode.