Home Postcodes by state VIC 3378 Postcode 3378 3378 is the postcode for 2 localities in VIC: Tatyoon and Yalla-Y-Poora. Localities with postcode 3378TatyoonVICYalla-Y-PooraVIC Postcode 3378 State or territory Victoria (VIC) Localities 2 Council area Ararat Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3377 · Postcode 3379