Home Postcodes by state WA 6166 Postcode 6166 6166 is the postcode for 4 localities in WA: Coogee, Henderson, Munster and Wattleup. Localities with postcode 6166CoogeeWAHendersonWAMunsterWAWattleupWA Postcode 6166 State or territory Western Australia (WA) Localities 4 Council area Cockburn Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6165 · Postcode 6167