Home Postcodes by state WA 6426 Postcode 6426 6426 is the postcode for 14 localities in WA: Corinthia, Ghooli, Holleton, Marvel Loch, Mount Hampton, Mount Holland and 8 more. Localities with postcode 6426CorinthiaWAGhooliWAHolletonWAMarvel LochWAMount HamptonWAMount HollandWAMount JacksonWAMount PalmerWAParker RangeWASkeleton RockWASouth YilgarnWASouthern CrossWATurkey HillWAYellowdineWA Postcode 6426 State or territory Western Australia (WA) Localities 14 Council area Yilgarn Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6425 · Postcode 6427