Home Postcode finder VIC Ullswater Ullswater postcode VIC Ullswater is a locality in Victoria covered by postcode 3318. Postcode 3318 State or territory Victoria (VIC) Region Vic Far Country Add a free Ullswater business listing Be the first listing in Ullswater Common questionsWhat is the postcode for Ullswater?Ullswater, VIC has the postcode 3318.What state is Ullswater in?Ullswater is in Victoria (VIC).Does postcode 3318 cover more than one suburb?Yes. Postcode 3318 covers 7 localities, so the postcode alone does not identify Ullswater. Browse other postcodes in Victoria, or widen the search to every Australian postcode.