Home Postcode finder WA Newlands Newlands postcode WA Newlands is a locality in Western Australia covered by postcode 6251. Postcode 6251 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Newlands business listing Be the first listing in Newlands Common questionsWhat is the postcode for Newlands?Newlands, WA has the postcode 6251.What state is Newlands in?Newlands is in Western Australia (WA).Does postcode 6251 cover more than one suburb?Yes. Postcode 6251 covers 3 localities, so the postcode alone does not identify Newlands. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.