Home Postcodes by state WA 6254 Postcode 6254 6254 is the postcode for 2 localities in WA: Greenbushes and North Greenbushes. Localities with postcode 6254GreenbushesWANorth GreenbushesWA Postcode 6254 State or territory Western Australia (WA) Localities 2 Council area Bridgetown-Greenbushes Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6253 · Postcode 6255