Home Postcode finder VIC Oxley Flats Oxley Flats postcode VIC Oxley Flats is a locality in Victoria covered by postcode 3678. Postcode 3678 State or territory Victoria (VIC) Region Vic Far Country Add a free Oxley Flats business listing Be the first listing in Oxley Flats Common questionsWhat is the postcode for Oxley Flats?Oxley Flats, VIC has the postcode 3678.What state is Oxley Flats in?Oxley Flats is in Victoria (VIC).Does postcode 3678 cover more than one suburb?Yes. Postcode 3678 covers 35 localities, so the postcode alone does not identify Oxley Flats. Browse other postcodes in Victoria, or widen the search to every Australian postcode.