Home Postcodes by state WA 6484 Postcode 6484 6484 is the postcode for 3 localities in WA: Bullfinch, Ennuin and Lake Deborah. Localities with postcode 6484BullfinchWAEnnuinWALake DeborahWA Postcode 6484 State or territory Western Australia (WA) Localities 3 Council area Yilgarn Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6480 · Postcode 6485