Home Postcode finder VIC Arcadia Arcadia postcode VIC Arcadia is a locality in Victoria covered by postcode 3631. Postcode 3631 State or territory Victoria (VIC) Region Vic Far Country Add a free Arcadia business listing Be the first listing in Arcadia Common questionsWhat is the postcode for Arcadia?Arcadia, VIC has the postcode 3631.What state is Arcadia in?Arcadia 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. Browse other postcodes in Victoria, or widen the search to every Australian postcode.