Home Postcode finder VIC Cobberas Cobberas postcode VIC Cobberas is a locality in Victoria covered by postcode 3900. Postcode 3900 State or territory Victoria (VIC) Region Vic Far Country Add a free Cobberas business listing Be the first listing in Cobberas Common questionsWhat is the postcode for Cobberas?Cobberas, VIC has the postcode 3900.What state is Cobberas in?Cobberas is in Victoria (VIC).Does postcode 3900 cover more than one suburb?Yes. Postcode 3900 covers 2 localities, so the postcode alone does not identify Cobberas. Browse other postcodes in Victoria, or widen the search to every Australian postcode.