Home Postcode finder VIC Cornishtown Cornishtown postcode VIC Cornishtown is a locality in Victoria covered by postcode 3683. Postcode 3683 State or territory Victoria (VIC) Region Vic Far Country Add a free Cornishtown business listing Be the first listing in Cornishtown Common questionsWhat is the postcode for Cornishtown?Cornishtown, VIC has the postcode 3683.What state is Cornishtown in?Cornishtown is in Victoria (VIC).Does postcode 3683 cover more than one suburb?Yes. Postcode 3683 covers 3 localities, so the postcode alone does not identify Cornishtown. Browse other postcodes in Victoria, or widen the search to every Australian postcode.