Home Postcode finder VIC Williamstown Williamstown postcode VIC Williamstown is a locality in Victoria covered by postcode 3016. Postcode 3016 State or territory Victoria (VIC) Region Footscray Add a free Williamstown business listing More business listings in Williamstown Businesses in WilliamstownBayside P-12 CollegeKororoit Creek Rd · 03 93971377Williamstown High School21-53 Bay View St · 03 93999228Williamstown High School76 Pasco St · 03 93971899 Common questionsWhat is the postcode for Williamstown?Williamstown, VIC has the postcode 3016.What state is Williamstown in?Williamstown is in Victoria (VIC).Does postcode 3016 cover more than one suburb?Yes. Postcode 3016 covers 2 localities, so the postcode alone does not identify Williamstown. Browse other postcodes in Victoria, or widen the search to every Australian postcode.