Home Postcode finder VIC Lake Wongan Lake Wongan postcode VIC Lake Wongan is a locality in Victoria covered by postcode 3373. Postcode 3373 State or territory Victoria (VIC) Region Vic Far Country Add a free Lake Wongan business listing Be the first listing in Lake Wongan Common questionsWhat is the postcode for Lake Wongan?Lake Wongan, VIC has the postcode 3373.What state is Lake Wongan in?Lake Wongan is in Victoria (VIC).Does postcode 3373 cover more than one suburb?Yes. Postcode 3373 covers 13 localities, so the postcode alone does not identify Lake Wongan. Browse other postcodes in Victoria, or widen the search to every Australian postcode.