Home Postcodes by state WA Wittenoom Wittenoom postcode WA Wittenoom is a locality in Western Australia covered by postcode 6751. Postcode 6751 State or territory Western Australia (WA) Region North West Suburbs Council area Ashburton Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Wittenoom business listing Be the first listing in Wittenoom Also in postcode 6751ChichesterWA 6751InnawangaWA 6751Juna DownsWA 6751KarijiniWA 6751Mount SheilaWA 6751Mulga DownsWA 6751NanutarraWA 6751RockleaWA 6751Tom PriceWA 6751 Common questionsWhat is the postcode for Wittenoom?Wittenoom, WA has the postcode 6751.What state is Wittenoom in?Wittenoom is in Western Australia (WA).What council is Wittenoom in?Wittenoom is in the Ashburton local government area.Does postcode 6751 cover more than one suburb?Yes. Postcode 6751 covers 10 localities, so the postcode alone does not identify Wittenoom. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.