Home Postcode finder SA Peterhead Peterhead postcode SA Peterhead is a locality in South Australia covered by postcode 5016. Postcode 5016 State or territory South Australia (SA) Region Adelaide Add a free Peterhead business listing Be the first listing in Peterhead Common questionsWhat is the postcode for Peterhead?Peterhead, SA has the postcode 5016.What state is Peterhead in?Peterhead is in South Australia (SA).Does postcode 5016 cover more than one suburb?Yes. Postcode 5016 covers 3 localities, so the postcode alone does not identify Peterhead. Browse other postcodes in South Australia, or widen the search to every Australian postcode.