Home Postcode finder VIC Mount Major Mount Major postcode VIC Mount Major is a locality in Victoria covered by postcode 3646. Postcode 3646 State or territory Victoria (VIC) Region Vic Far Country Add a free Mount Major business listing Be the first listing in Mount Major Common questionsWhat is the postcode for Mount Major?Mount Major, VIC has the postcode 3646.What state is Mount Major in?Mount Major is in Victoria (VIC).Does postcode 3646 cover more than one suburb?Yes. Postcode 3646 covers 7 localities, so the postcode alone does not identify Mount Major. Browse other postcodes in Victoria, or widen the search to every Australian postcode.