Home Postcode finder VIC Monomak Monomak postcode VIC Monomak is a locality in Victoria covered by postcode 3860. Postcode 3860 State or territory Victoria (VIC) Region Vic Far Country Add a free Monomak business listing Be the first listing in Monomak Common questionsWhat is the postcode for Monomak?Monomak, VIC has the postcode 3860.What state is Monomak in?Monomak is in Victoria (VIC).Does postcode 3860 cover more than one suburb?Yes. Postcode 3860 covers 15 localities, so the postcode alone does not identify Monomak. Browse other postcodes in Victoria, or widen the search to every Australian postcode.