Home Postcodes by state VIC 3101 Postcode 3101 3101 is the postcode for 2 localities in VIC: Cotham and Kew. Localities with postcode 3101CothamVICKewVIC Postcode 3101 State or territory Victoria (VIC) Localities 2 Council area Boroondara Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3099 · Postcode 3102