Home Postcode finder WA Siesta Park Siesta Park postcode WA Siesta Park 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 Siesta Park business listing Be the first listing in Siesta Park Common questionsWhat is the postcode for Siesta Park?Siesta Park, WA has the postcode 6280.What state is Siesta Park in?Siesta Park 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 Siesta Park. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.