Home Postcode finder VIC Cathkin Cathkin postcode VIC Cathkin is a locality in Victoria covered by postcode 3714. Postcode 3714 State or territory Victoria (VIC) Region Vic Far Country Add a free Cathkin business listing Be the first listing in Cathkin Common questionsWhat is the postcode for Cathkin?Cathkin, VIC has the postcode 3714.What state is Cathkin in?Cathkin is in Victoria (VIC).Does postcode 3714 cover more than one suburb?Yes. Postcode 3714 covers 10 localities, so the postcode alone does not identify Cathkin. Browse other postcodes in Victoria, or widen the search to every Australian postcode.