Home Postcode finder VIC Balwyn Balwyn postcode VIC Balwyn is a locality in Victoria covered by postcode 3103. Postcode 3103 State or territory Victoria (VIC) Region Hawthorn Add a free Balwyn business listing More business listings in Balwyn Businesses in Balwyn5 Star Cash For Car Removals68-72 Whitehorse Road, Balwyn VIC 3103, Australia · 03967374245Star Cash For Car Removals68-72 Whitehorse Road, Balwyn VIC 3103, Australia · 03 9673 7424Ahua2/66 Metung Street, Balwyn VIC 3103, Australia · 0410054202 Common questionsWhat is the postcode for Balwyn?Balwyn, VIC has the postcode 3103.What state is Balwyn in?Balwyn is in Victoria (VIC).Does postcode 3103 cover more than one suburb?Yes. Postcode 3103 covers 3 localities, so the postcode alone does not identify Balwyn. Browse other postcodes in Victoria, or widen the search to every Australian postcode.