Home Postcodes by state VIC 3128 Postcode 3128 3128 is the postcode for 5 localities in VIC: Box Hill, Box Hill Central, Box Hill South, Houston and Wattle Park. Localities with postcode 3128Box HillVICBox Hill CentralVICBox Hill SouthVICHoustonVICWattle ParkVIC Postcode 3128 State or territory Victoria (VIC) Localities 5 Council area Whitehorse Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3127 · Postcode 3129