Home Postcode finder VIC Arcadia South Arcadia South postcode VIC Arcadia South is a locality in Victoria covered by postcode 3631. Postcode 3631 State or territory Victoria (VIC) Region Vic Far Country Add a free Arcadia South business listing Be the first listing in Arcadia South Common questionsWhat is the postcode for Arcadia South?Arcadia South, VIC has the postcode 3631.What state is Arcadia South in?Arcadia South is in Victoria (VIC).Does postcode 3631 cover more than one suburb?Yes. Postcode 3631 covers 14 localities, so the postcode alone does not identify Arcadia South. Browse other postcodes in Victoria, or widen the search to every Australian postcode.