Home Postcodes by state WA 6255 Postcode 6255 6255 is the postcode for 7 localities in WA: Benjinup, Bridgetown, Catterick, Hester, Hester Brook, Kangaroo Gully and 1 more. Localities with postcode 6255BenjinupWABridgetownWACatterickWAHesterWAHester BrookWAKangaroo GullyWAWinnejupWA Postcode 6255 State or territory Western Australia (WA) Localities 7 Council area Boyup Brook; Bridgetown-Greenbushes Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6254 · Postcode 6256