Home Postcodes by state VIC 3509 Postcode 3509 3509 is the postcode for 2 localities in VIC: Linga and Underbool. Localities with postcode 3509LingaVICUnderboolVIC Postcode 3509 State or territory Victoria (VIC) Localities 2 Council area Mildura Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3507 · Postcode 3512