Home Postcodes by state VIC 3423 Postcode 3423 3423 is the postcode for Jeparit, VIC. Localities with postcode 3423JeparitVIC Postcode 3423 State or territory Victoria (VIC) Localities 1 Council area Hindmarsh Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3420 · Postcode 3424