Home Postcodes by state WA 6510 Postcode 6510 6510 is the postcode for 6 localities in WA: Barberton, Berkshire Valley, Gillingarra, Koojan, Moora and Walebing. Localities with postcode 6510BarbertonWABerkshire ValleyWAGillingarraWAKoojanWAMooraWAWalebingWA Postcode 6510 State or territory Western Australia (WA) Localities 6 Council area Moora; Victoria Plains Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6509 · Postcode 6511