Home Postcode finder VIC Mount Wallace Mount Wallace postcode VIC Mount Wallace is a locality in Victoria covered by postcode 3342. Postcode 3342 State or territory Victoria (VIC) Region Vic Far Country Add a free Mount Wallace business listing Be the first listing in Mount Wallace Common questionsWhat is the postcode for Mount Wallace?Mount Wallace, VIC has the postcode 3342.What state is Mount Wallace in?Mount Wallace is in Victoria (VIC).Does postcode 3342 cover more than one suburb?Yes. Postcode 3342 covers 9 localities, so the postcode alone does not identify Mount Wallace. Browse other postcodes in Victoria, or widen the search to every Australian postcode.