Home Postcodes by state WA 6480 Postcode 6480 6480 is the postcode for Nukarni, WA. Localities with postcode 6480NukarniWA Postcode 6480 State or territory Western Australia (WA) Localities 1 Council area Merredin Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6479 · Postcode 6484