Home Postcode finder SA Port Pirie West Port Pirie West postcode SA Port Pirie West is a locality in South Australia covered by postcode 5540. Postcode 5540 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Port Pirie West business listing Be the first listing in Port Pirie West Common questionsWhat is the postcode for Port Pirie West?Port Pirie West, SA has the postcode 5540.What state is Port Pirie West in?Port Pirie West is in South Australia (SA).Does postcode 5540 cover more than one suburb?Yes. Postcode 5540 covers 14 localities, so the postcode alone does not identify Port Pirie West. Browse other postcodes in South Australia, or widen the search to every Australian postcode.