Home Postcode finder WA Lake Darlot Lake Darlot postcode WA Lake Darlot is a locality in Western Australia covered by postcode 6438. Postcode 6438 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Lake Darlot business listing Be the first listing in Lake Darlot Common questionsWhat is the postcode for Lake Darlot?Lake Darlot, WA has the postcode 6438.What state is Lake Darlot in?Lake Darlot is in Western Australia (WA).Does postcode 6438 cover more than one suburb?Yes. Postcode 6438 covers 2 localities, so the postcode alone does not identify Lake Darlot. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.