Home Postcode finder VIC Willowmavin Willowmavin postcode VIC Willowmavin is a locality in Victoria covered by postcode 3764. Postcode 3764 State or territory Victoria (VIC) Region Melbourne North West Add a free Willowmavin business listing Be the first listing in Willowmavin Common questionsWhat is the postcode for Willowmavin?Willowmavin, VIC has the postcode 3764.What state is Willowmavin in?Willowmavin is in Victoria (VIC).Does postcode 3764 cover more than one suburb?Yes. Postcode 3764 covers 8 localities, so the postcode alone does not identify Willowmavin. Browse other postcodes in Victoria, or widen the search to every Australian postcode.