Home Postcodes by state WA 6050 Postcode 6050 6050 is the postcode for 3 localities in WA: Coolbinia, Menora and Mount Lawley. Localities with postcode 6050CoolbiniaWAMenoraWAMount LawleyWA Postcode 6050 State or territory Western Australia (WA) Localities 3 Council area Stirling; Mainly Stirling, partly Vincent Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6044 · Postcode 6051