Home Postcode finder VIC Cowwarr Cowwarr postcode VIC Cowwarr is a locality in Victoria covered by postcode 3857. Postcode 3857 State or territory Victoria (VIC) Region Vic Far Country Add a free Cowwarr business listing More business listings in Cowwarr Businesses in CowwarrCowwarr Primary SchoolChurch St · 03 51489271 Common questionsWhat is the postcode for Cowwarr?Cowwarr, VIC has the postcode 3857.What state is Cowwarr in?Cowwarr is in Victoria (VIC).Does postcode 3857 cover more than one suburb?No. Postcode 3857 covers Cowwarr only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.