Home Postcodes by state VIC 3621 Postcode 3621 3621 is the postcode for 3 localities in VIC: Kyvalley, Tongala and Yambuna. Localities with postcode 3621KyvalleyVICTongalaVICYambunaVIC Postcode 3621 State or territory Victoria (VIC) Localities 3 Council area Campaspe Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3620 · Postcode 3622