Home Postcodes by state WA 6487 Postcode 6487 6487 is the postcode for 3 localities in WA: North Yelbeni, South Yelbeni and Yelbeni. Localities with postcode 6487North YelbeniWASouth YelbeniWAYelbeniWA Postcode 6487 State or territory Western Australia (WA) Localities 3 Council area Trayning Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6485 · Postcode 6488