Home Postcode finder WA Brockman Brockman postcode WA Brockman 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 Brockman business listing Be the first listing in Brockman Common questionsWhat is the postcode for Brockman?Brockman, WA has the postcode 6701.What state is Brockman in?Brockman 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 Brockman. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.