Home Postcodes by state WA 6328 Postcode 6328 6328 is the postcode for 8 localities in WA: Cheynes, Gnowellen, Green Range, Kojaneerup South, Manypeaks, Mettler and 2 more. Localities with postcode 6328CheynesWAGnowellenWAGreen RangeWAKojaneerup SouthWAManypeaksWAMettlerWAPalmdaleWAWellsteadWA Postcode 6328 State or territory Western Australia (WA) Localities 8 Council area Albany Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6327 · Postcode 6330