Home Postcode finder WA Sherlock Sherlock postcode WA Sherlock is a locality in Western Australia covered by postcode 6714. Postcode 6714 State or territory Western Australia (WA) Region North West Suburbs Add a free Sherlock business listing Be the first listing in Sherlock Common questionsWhat is the postcode for Sherlock?Sherlock, WA has the postcode 6714.What state is Sherlock in?Sherlock is in Western Australia (WA).Does postcode 6714 cover more than one suburb?Yes. Postcode 6714 covers 20 localities, so the postcode alone does not identify Sherlock. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.