Home Postcodes by state WA Lake Deborah Lake Deborah postcode WA Lake Deborah is a locality in Western Australia covered by postcode 6484. Postcode 6484 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Council area Yilgarn Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Lake Deborah business listing Be the first listing in Lake Deborah Also in postcode 6484BullfinchWA 6484EnnuinWA 6484 Common questionsWhat is the postcode for Lake Deborah?Lake Deborah, WA has the postcode 6484.What state is Lake Deborah in?Lake Deborah is in Western Australia (WA).What council is Lake Deborah in?Lake Deborah is in the Yilgarn local government area.Does postcode 6484 cover more than one suburb?Yes. Postcode 6484 covers 3 localities, so the postcode alone does not identify Lake Deborah. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.