Home Postcodes by state WA 6513 Postcode 6513 6513 is the postcode for 2 localities in WA: Gunyidi and Watheroo. Localities with postcode 6513GunyidiWAWatherooWA Postcode 6513 State or territory Western Australia (WA) Localities 2 Council area Coorow; Moora Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6512 · Postcode 6514