Home Postcodes by state WA Mount Holland Mount Holland postcode WA Mount Holland is a locality in Western Australia covered by postcode 6426. Postcode 6426 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Council area Yilgarn Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Mount Holland business listing Be the first listing in Mount Holland Also in postcode 6426CorinthiaWA 6426GhooliWA 6426HolletonWA 6426Marvel LochWA 6426Mount HamptonWA 6426Mount JacksonWA 6426Mount PalmerWA 6426Parker RangeWA 6426Skeleton RockWA 6426South YilgarnWA 6426Southern CrossWA 6426Turkey HillWA 6426YellowdineWA 6426 Common questionsWhat is the postcode for Mount Holland?Mount Holland, WA has the postcode 6426.What state is Mount Holland in?Mount Holland is in Western Australia (WA).What council is Mount Holland in?Mount Holland is in the Yilgarn local government area.Does postcode 6426 cover more than one suburb?Yes. Postcode 6426 covers 14 localities, so the postcode alone does not identify Mount Holland. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.