Home Postcode finder VIC Seaview Seaview postcode VIC Seaview is a locality in Victoria covered by postcode 3821. Postcode 3821 State or territory Victoria (VIC) Region Vic Far Country Add a free Seaview business listing Be the first listing in Seaview Common questionsWhat is the postcode for Seaview?Seaview, VIC has the postcode 3821.What state is Seaview in?Seaview is in Victoria (VIC).Does postcode 3821 cover more than one suburb?Yes. Postcode 3821 covers 17 localities, so the postcode alone does not identify Seaview. Browse other postcodes in Victoria, or widen the search to every Australian postcode.