Home Postcode finder VIC Barnadown Barnadown postcode VIC Barnadown is a locality in Victoria covered by postcode 3557. Postcode 3557 State or territory Victoria (VIC) Region Vic Far Country Add a free Barnadown business listing Be the first listing in Barnadown Common questionsWhat is the postcode for Barnadown?Barnadown, VIC has the postcode 3557.What state is Barnadown in?Barnadown is in Victoria (VIC).Does postcode 3557 cover more than one suburb?Yes. Postcode 3557 covers 4 localities, so the postcode alone does not identify Barnadown. Browse other postcodes in Victoria, or widen the search to every Australian postcode.