Home Postcode finder VIC St Helena St Helena postcode VIC St Helena is a locality in Victoria covered by postcode 3088. Postcode 3088 State or territory Victoria (VIC) Region Preston Add a free St Helena business listing Be the first listing in St Helena Common questionsWhat is the postcode for St Helena?St Helena, VIC has the postcode 3088.What state is St Helena in?St Helena is in Victoria (VIC).Does postcode 3088 cover more than one suburb?Yes. Postcode 3088 covers 3 localities, so the postcode alone does not identify St Helena. Browse other postcodes in Victoria, or widen the search to every Australian postcode.