Home Postcode finder SA Sellicks Beach Sellicks Beach postcode SA Sellicks Beach is a locality in South Australia covered by postcode 5174. Postcode 5174 State or territory South Australia (SA) Region Adelaide Add a free Sellicks Beach business listing Be the first listing in Sellicks Beach Common questionsWhat is the postcode for Sellicks Beach?Sellicks Beach, SA has the postcode 5174.What state is Sellicks Beach in?Sellicks Beach is in South Australia (SA).Does postcode 5174 cover more than one suburb?Yes. Postcode 5174 covers 2 localities, so the postcode alone does not identify Sellicks Beach. Browse other postcodes in South Australia, or widen the search to every Australian postcode.