Home Postcodes by state WA 6501 Postcode 6501 6501 is the postcode for Muchea, WA. Localities with postcode 6501MucheaWA Postcode 6501 State or territory Western Australia (WA) Localities 1 Council area Chittering Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6490 · Postcode 6502