Home Postcode finder WA Townsendale Townsendale postcode WA Townsendale is a locality in Western Australia covered by postcode 6311. Postcode 6311 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Townsendale business listing Be the first listing in Townsendale Common questionsWhat is the postcode for Townsendale?Townsendale, WA has the postcode 6311.What state is Townsendale in?Townsendale is in Western Australia (WA).Does postcode 6311 cover more than one suburb?Yes. Postcode 6311 covers 8 localities, so the postcode alone does not identify Townsendale. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.