Home Postcode finder WA Chapman Hill Chapman Hill postcode WA Chapman Hill is a locality in Western Australia covered by postcode 6280. Postcode 6280 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Chapman Hill business listing Be the first listing in Chapman Hill Common questionsWhat is the postcode for Chapman Hill?Chapman Hill, WA has the postcode 6280.What state is Chapman Hill in?Chapman Hill is in Western Australia (WA).Does postcode 6280 cover more than one suburb?Yes. Postcode 6280 covers 34 localities, so the postcode alone does not identify Chapman Hill. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.