Home Postcode finder SA Nalyappa Nalyappa postcode SA Nalyappa 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 Nalyappa business listing Be the first listing in Nalyappa Common questionsWhat is the postcode for Nalyappa?Nalyappa, SA has the postcode 5558.What state is Nalyappa in?Nalyappa 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 Nalyappa. Browse other postcodes in South Australia, or widen the search to every Australian postcode.