Home Postcode finder SA North Yelta North Yelta postcode SA North Yelta is a locality in South Australia covered by postcode 5558. Postcode 5558 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free North Yelta business listing Be the first listing in North Yelta Common questionsWhat is the postcode for North Yelta?North Yelta, SA has the postcode 5558.What state is North Yelta in?North Yelta is in South Australia (SA).Does postcode 5558 cover more than one suburb?Yes. Postcode 5558 covers 14 localities, so the postcode alone does not identify North Yelta. Browse other postcodes in South Australia, or widen the search to every Australian postcode.