Home Postcodes by state WA 6519 Postcode 6519 6519 is the postcode for 6 localities in WA: Arrino, Arrowsmith East, Dudawa, Kadathinni, Three Springs and Womarden. Localities with postcode 6519ArrinoWAArrowsmith EastWADudawaWAKadathinniWAThree SpringsWAWomardenWA Postcode 6519 State or territory Western Australia (WA) Localities 6 Council area Three Springs Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6518 · Postcode 6521