Home Postcodes by state WA Howick Howick postcode WA Howick is a locality in Western Australia covered by postcode 6450. Postcode 6450 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Council area Esperance Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Howick business listing Be the first listing in Howick Also in postcode 6450Bandy CreekWA 6450BeaumontWA 6450BoyatupWA 6450Cape Le GrandWA 6450CascadeWA 6450CastletownWA 6450ChadwickWA 6450CondingupWA 6450CoomalbidgupWA 6450DalyupWA 6450East MunglinupWA 6450EsperanceWA 6450MerivaleWA 6450MonjingupWA 6450MunglinupWA 6450MyrupWA 6450NeridupWA 6450NulsenWA 6450Pink LakeWA 6450SinclairWA 6450West BeachWA 6450WindaboutWA 6450 Other places called HowickHowickNSW 2330 Common questionsWhat is the postcode for Howick?Howick, WA has the postcode 6450.What state is Howick in?Howick is in Western Australia (WA).What council is Howick in?Howick is in the Esperance local government area.Does postcode 6450 cover more than one suburb?Yes. Postcode 6450 covers 23 localities, so the postcode alone does not identify Howick. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.