Home Postcodes by state VIC 3142 Postcode 3142 3142 is the postcode for 2 localities in VIC: Hawksburn and Toorak. Localities with postcode 3142HawksburnVICToorakVIC Postcode 3142 State or territory Victoria (VIC) Localities 2 Council area Stonnington Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3141 · Postcode 3143