Home Postcode finder VIC Swan Bay Swan Bay postcode VIC Swan Bay is a locality in Victoria covered by postcode 3225. Postcode 3225 State or territory Victoria (VIC) Region Vic Far Country Add a free Swan Bay business listing Be the first listing in Swan Bay Common questionsWhat is the postcode for Swan Bay?Swan Bay, VIC has the postcode 3225.What state is Swan Bay in?Swan Bay is in Victoria (VIC).Does postcode 3225 cover more than one suburb?Yes. Postcode 3225 covers 4 localities, so the postcode alone does not identify Swan Bay. Browse other postcodes in Victoria, or widen the search to every Australian postcode.