Home Postcode finder WA Pink Lake Pink Lake postcode WA Pink Lake is a locality in Western Australia covered by postcode 6450. Postcode 6450 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Pink Lake business listing Be the first listing in Pink Lake Common questionsWhat is the postcode for Pink Lake?Pink Lake, WA has the postcode 6450.What state is Pink Lake in?Pink Lake is in Western Australia (WA).Does postcode 6450 cover more than one suburb?Yes. Postcode 6450 covers 23 localities, so the postcode alone does not identify Pink Lake. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.