Home Postcode finder VIC Drouin South Drouin South postcode VIC Drouin South is a locality in Victoria covered by postcode 3818. Postcode 3818 State or territory Victoria (VIC) Region Vic Country Add a free Drouin South business listing More business listings in Drouin South Businesses in Drouin SouthConveyancing Today28 Princes Way · 610356251605 Common questionsWhat is the postcode for Drouin South?Drouin South, VIC has the postcode 3818.What state is Drouin South in?Drouin South is in Victoria (VIC).Does postcode 3818 cover more than one suburb?Yes. Postcode 3818 covers 8 localities, so the postcode alone does not identify Drouin South. Browse other postcodes in Victoria, or widen the search to every Australian postcode.