Home Postcodes by state WA 6411 Postcode 6411 6411 is the postcode for 2 localities in WA: Doodlakine and South Doodlakine. Localities with postcode 6411DoodlakineWASouth DoodlakineWA Postcode 6411 State or territory Western Australia (WA) Localities 2 Council area Kellerberrin Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6410 · Postcode 6412