Home Postcodes by state WA 6181 Postcode 6181 6181 is the postcode for Stake Hill, WA. Localities with postcode 6181Stake HillWA Postcode 6181 State or territory Western Australia (WA) Localities 1 Council area Murray Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6180 · Postcode 6182