Home Postcode finder VIC Coimadai Coimadai postcode VIC Coimadai is a locality in Victoria covered by postcode 3340. Postcode 3340 State or territory Victoria (VIC) Region Melbourne North West Add a free Coimadai business listing More business listings in Coimadai Businesses in CoimadaiCoimadai Primary SchoolBennetts Lane · 03 53672907 Common questionsWhat is the postcode for Coimadai?Coimadai, VIC has the postcode 3340.What state is Coimadai in?Coimadai is in Victoria (VIC).Does postcode 3340 cover more than one suburb?Yes. Postcode 3340 covers 12 localities, so the postcode alone does not identify Coimadai. Browse other postcodes in Victoria, or widen the search to every Australian postcode.