Home Postcodes by state WA Southern Brook Southern Brook postcode WA Southern Brook is a locality in Western Australia covered by postcode 6401. Postcode 6401 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Council area Northam Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Southern Brook business listing Be the first listing in Southern Brook Suburbs near Southern BrookStraight-line distance between locality centres.Grass ValleyWA 6403 · 9.5 kmJennapullinWA 6401 · 10.6 kmMeenaarWA 6401 · 10.7 kmGreenwoods ValleyWA 6405 · 11.5 kmMalabaineWA 6401 · 13.9 kmCunjardineWA 6401 · 14.6 kmJennacubbineWA 6401 · 16.4 kmThrossellWA 6401 · 16.5 kmRossmoreWA 6401 · 16.8 kmMuluckineWA 6401 · 17.0 kmIrishtownWA 6401 · 18.0 kmNorthamWA 6401 · 18.8 km Also in postcode 6401BucklandWA 6401BurlongWA 6401CunjardineWA 6401IrishtownWA 6401JennacubbineWA 6401JennapullinWA 6401MalabaineWA 6401MeenaarWA 6401MokineWA 6401MuluckineWA 6401MumberkineWA 6401MureskWA 6401NorthamWA 6401RossmoreWA 6401Spencers BrookWA 6401ThrossellWA 6401WongamineWA 6401 Common questionsWhat is the postcode for Southern Brook?Southern Brook, WA has the postcode 6401.What state is Southern Brook in?Southern Brook is in Western Australia (WA).What council is Southern Brook in?Southern Brook is in the Northam local government area.Does postcode 6401 cover more than one suburb?Yes. Postcode 6401 covers 18 localities, so the postcode alone does not identify Southern Brook.What suburbs are near Southern Brook?The closest are Grass Valley (9.5 km), Jennapullin (10.6 km), Meenaar (10.7 km), Greenwoods Valley (11.5 km) and Malabaine (13.9 km). Distances are straight lines between locality centres. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.