Home Postcodes by state WA Whitby Whitby postcode WA Whitby is a locality in Western Australia covered by postcode 6123. Postcode 6123 State or territory Western Australia (WA) Region North West Suburbs Council area Serpentine-Jarrahdale Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Whitby business listing Be the first listing in Whitby Suburbs near WhitbyStraight-line distance between locality centres.MundijongWA 6123 · 2.5 kmCardupWA 6122 · 4.1 kmMardellaWA 6125 · 5.4 kmJarrahdaleWA 6124 · 6.9 kmByfordWA 6122 · 7.8 kmSerpentineWA 6125 · 8.7 kmKarrakupWA 6122 · 9.7 kmOldburyWA 6121 · 10.5 kmDarling DownsWA 6122 · 11.4 kmWungongWA 6112 · 11.7 kmOakfordWA 6121 · 12.6 kmHilbertWA 6112 · 12.9 kmDistances to every suburb around Whitby Also in postcode 6123MundijongWA 6123 Common questionsWhat is the postcode for Whitby?Whitby, WA has the postcode 6123.What state is Whitby in?Whitby is in Western Australia (WA).What council is Whitby in?Whitby is in the Serpentine-Jarrahdale local government area.Does postcode 6123 cover more than one suburb?Yes. Postcode 6123 covers 2 localities, so the postcode alone does not identify Whitby.What suburbs are near Whitby?The closest are Mundijong (2.5 km), Cardup (4.1 km), Mardella (5.4 km), Jarrahdale (6.9 km) and Byford (7.8 km). Distances are straight lines between locality centres. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.