Home Postcode finder VIC Thornton Thornton postcode VIC Thornton is a locality in Victoria covered by postcode 3712. Postcode 3712 State or territory Victoria (VIC) Region Vic Far Country Add a free Thornton business listing More business listings in Thornton Businesses in ThorntonRubicon Outdoor School264 Rubicon Rd · 03 57732285Thornton Primary School9 Back Eildon Rd · 03 57732228 Common questionsWhat is the postcode for Thornton?Thornton, VIC has the postcode 3712.What state is Thornton in?Thornton is in Victoria (VIC).Does postcode 3712 cover more than one suburb?Yes. Postcode 3712 covers 2 localities, so the postcode alone does not identify Thornton. Browse other postcodes in Victoria, or widen the search to every Australian postcode.