Home Postcode finder VIC Monomeith Monomeith postcode VIC Monomeith is a locality in Victoria covered by postcode 3984. Postcode 3984 State or territory Victoria (VIC) Region Vic Far Country Add a free Monomeith business listing Be the first listing in Monomeith Common questionsWhat is the postcode for Monomeith?Monomeith, VIC has the postcode 3984.What state is Monomeith in?Monomeith is in Victoria (VIC).Does postcode 3984 cover more than one suburb?Yes. Postcode 3984 covers 13 localities, so the postcode alone does not identify Monomeith. Browse other postcodes in Victoria, or widen the search to every Australian postcode.