Home Postcode finder WA Denham Denham postcode WA Denham is a locality in Western Australia covered by postcode 6537. Postcode 6537 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Denham business listing More business listings in Denham Businesses in DenhamShark Bay Primary School39 Hughes St · 08 99480000 Common questionsWhat is the postcode for Denham?Denham, WA has the postcode 6537.What state is Denham in?Denham is in Western Australia (WA).Does postcode 6537 cover more than one suburb?Yes. Postcode 6537 covers 7 localities, so the postcode alone does not identify Denham. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.