Home Postcode finder WA Brown Range Brown Range postcode WA Brown Range is a locality in Western Australia covered by postcode 6701. Postcode 6701 State or territory Western Australia (WA) Region North West Suburbs Add a free Brown Range business listing Be the first listing in Brown Range Common questionsWhat is the postcode for Brown Range?Brown Range, WA has the postcode 6701.What state is Brown Range in?Brown Range is in Western Australia (WA).Does postcode 6701 cover more than one suburb?Yes. Postcode 6701 covers 28 localities, so the postcode alone does not identify Brown Range. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.