Home Postcode finder VIC Waterloo Waterloo postcode VIC Waterloo is a locality in Victoria covered by postcode 3373. Postcode 3373 State or territory Victoria (VIC) Region Vic Far Country Add a free Waterloo business listing Be the first listing in Waterloo Common questionsWhat is the postcode for Waterloo?Waterloo, VIC has the postcode 3373.What state is Waterloo in?Waterloo 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 Waterloo. Browse other postcodes in Victoria, or widen the search to every Australian postcode.