Home Postcode finder SA Petherick Petherick postcode SA Petherick is a locality in South Australia covered by postcode 5267. Postcode 5267 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Petherick business listing Be the first listing in Petherick Common questionsWhat is the postcode for Petherick?Petherick, SA has the postcode 5267.What state is Petherick in?Petherick is in South Australia (SA).Does postcode 5267 cover more than one suburb?Yes. Postcode 5267 covers 12 localities, so the postcode alone does not identify Petherick. Browse other postcodes in South Australia, or widen the search to every Australian postcode.