Home Postcodes by state WA Onslow Onslow postcode WA Onslow is a locality in Western Australia covered by postcode 6710. Postcode 6710 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 Onslow business listing More business listings in Onslow Suburbs near OnslowStraight-line distance between locality centres.Thevenard IslandWA 6711 · 23.3 km Businesses in OnslowElite Maintenance PilbaraOnslow WA, Australia · 131580Joyce Krane691 Onslow Road, Onslow WA, Australia · (08) 7979 2312Onslow SchoolSimpson St · 08 91846062 Also in postcode 6710CaneWA 6710PeedamullaWA 6710TalandjiWA 6710YannarieWA 6710 Common questionsWhat is the postcode for Onslow?Onslow, WA has the postcode 6710.What state is Onslow in?Onslow is in Western Australia (WA).What council is Onslow in?Onslow is in the Ashburton local government area.Does postcode 6710 cover more than one suburb?Yes. Postcode 6710 covers 5 localities, so the postcode alone does not identify Onslow.What suburbs are near Onslow?The closest are Thevenard Island (23.3 km). Distances are straight lines between locality centres. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.