Home Postcode finder VIC Ouyen Ouyen postcode VIC Ouyen is a locality in Victoria covered by postcode 3490. Postcode 3490 State or territory Victoria (VIC) Region Vic Far Country Add a free Ouyen business listing More business listings in Ouyen Businesses in OuyenOuyen Primary SchoolHunt St · 03 50921161Ouyen Secondary CollegeFuller St · 03 50921182 Common questionsWhat is the postcode for Ouyen?Ouyen, VIC has the postcode 3490.What state is Ouyen in?Ouyen is in Victoria (VIC).Does postcode 3490 cover more than one suburb?Yes. Postcode 3490 covers 8 localities, so the postcode alone does not identify Ouyen. Browse other postcodes in Victoria, or widen the search to every Australian postcode.