Home Postcodes by state VIC 3091 Postcode 3091 3091 is the postcode for Yarrambat, VIC. Localities with postcode 3091YarrambatVIC Postcode 3091 State or territory Victoria (VIC) Localities 1 Council area Nillumbik Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3090 · Postcode 3093