Home Postcode finder SA Nalpa Nalpa postcode SA Nalpa is a locality in South Australia covered by postcode 5255. Postcode 5255 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Nalpa business listing Be the first listing in Nalpa Common questionsWhat is the postcode for Nalpa?Nalpa, SA has the postcode 5255.What state is Nalpa in?Nalpa is in South Australia (SA).Does postcode 5255 cover more than one suburb?Yes. Postcode 5255 covers 19 localities, so the postcode alone does not identify Nalpa. Browse other postcodes in South Australia, or widen the search to every Australian postcode.