Home Postcodes by state WA 6407 Postcode 6407 6407 is the postcode for 5 localities in WA: Cunderdin, Waeel, Watercarrin, Wyola West and Youndegin. Postcode 6407 State or territory Western Australia (WA) Localities 5 Council area Cunderdin Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Localities with postcode 6407CunderdinWAWaeelWAWatercarrinWAWyola WestWAYoundeginWA Browse postcodes in order← 6405 Greenwoods Valley · 6409 North Tammin →