Home Postcodes by state WA Chichester Chichester postcode WA Chichester 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 Chichester business listing Be the first listing in Chichester Also in postcode 6751InnawangaWA 6751Juna DownsWA 6751KarijiniWA 6751Mount SheilaWA 6751Mulga DownsWA 6751NanutarraWA 6751RockleaWA 6751Tom PriceWA 6751WittenoomWA 6751 Other places called ChichesterChichesterNSW 2420 Common questionsWhat is the postcode for Chichester?Chichester, WA has the postcode 6751.What state is Chichester in?Chichester is in Western Australia (WA).What council is Chichester in?Chichester 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 Chichester. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.