Home Postcodes by state VIC 3990 Postcode 3990 3990 is the postcode for Glen Forbes, VIC. Localities with postcode 3990Glen ForbesVIC Postcode 3990 State or territory Victoria (VIC) Localities 1 Council area Bass Coast Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3988 · Postcode 3991