Home Postcodes by state VIC 3137 Postcode 3137 3137 is the postcode for 2 localities in VIC: Kilsyth and Kilsyth South. Localities with postcode 3137KilsythVICKilsyth SouthVIC Postcode 3137 State or territory Victoria (VIC) Localities 2 Council area Mainly Yarra Ranges, partly Maroondah; Maroondah Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3136 · Postcode 3138