Home Postcode finder VIC Avon Plains Avon Plains postcode VIC Avon Plains is a locality in Victoria covered by postcode 3477. Postcode 3477 State or territory Victoria (VIC) Region Vic Far Country Add a free Avon Plains business listing Be the first listing in Avon Plains Common questionsWhat is the postcode for Avon Plains?Avon Plains, VIC has the postcode 3477.What state is Avon Plains in?Avon Plains is in Victoria (VIC).Does postcode 3477 cover more than one suburb?Yes. Postcode 3477 covers 30 localities, so the postcode alone does not identify Avon Plains. Browse other postcodes in Victoria, or widen the search to every Australian postcode.