balwyn postcode vicbu Home ›› Postcode Finder ›› VICBU ›› Balwyn Balwyn local listingsThe suburb of Balwyn is located in VIC and has a postcode of 3103. Free balwyn business listing! 1Fintona Girls' School79 Balwyn Rd 03 983013882Belmore School49-51 Stroud St 03 985987623All Hallows School3 Brenbeal St 03 98364929 View more business listings in balwyn Search and find other Postcodes in Victoria or widen the search to Postcodes in Australia.