Home Postcodes by state WA 6373 Postcode 6373 6373 is the postcode for Bullaring, WA. Localities with postcode 6373BullaringWA Postcode 6373 State or territory Western Australia (WA) Localities 1 Council area Corrigin Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6372 · Postcode 6375