Home Postcode finder WA Pinjar Pinjar postcode WA Pinjar is a locality in Western Australia covered by postcode 6078. Postcode 6078 State or territory Western Australia (WA) Region North West Suburbs Add a free Pinjar business listing Be the first listing in Pinjar Common questionsWhat is the postcode for Pinjar?Pinjar, WA has the postcode 6078.What state is Pinjar in?Pinjar is in Western Australia (WA).Does postcode 6078 cover more than one suburb?Yes. Postcode 6078 covers 2 localities, so the postcode alone does not identify Pinjar. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.