Home Postcodes by state WA 6105 Postcode 6105 6105 is the postcode for 3 localities in WA: Cloverdale, Kewdale and Perth Airport. Localities with postcode 6105CloverdaleWAKewdaleWAPerth AirportWA Postcode 6105 State or territory Western Australia (WA) Localities 3 Council area Belmont; Mainly Belmont, partly Swan Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6104 · Postcode 6106