Home Postcode finder WA Lake Hinds Lake Hinds postcode WA Lake Hinds is a locality in Western Australia covered by postcode 6603. Postcode 6603 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Lake Hinds business listing Be the first listing in Lake Hinds Common questionsWhat is the postcode for Lake Hinds?Lake Hinds, WA has the postcode 6603.What state is Lake Hinds in?Lake Hinds is in Western Australia (WA).Does postcode 6603 cover more than one suburb?Yes. Postcode 6603 covers 5 localities, so the postcode alone does not identify Lake Hinds. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.