Home Postcode finder SA Mypolonga Mypolonga postcode SA Mypolonga is a locality in South Australia covered by postcode 5254. Postcode 5254 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Mypolonga business listing More business listings in Mypolonga Businesses in MypolongaMypolonga Primary School40 William St · 08 85354191 Common questionsWhat is the postcode for Mypolonga?Mypolonga, SA has the postcode 5254.What state is Mypolonga in?Mypolonga is in South Australia (SA).Does postcode 5254 cover more than one suburb?Yes. Postcode 5254 covers 12 localities, so the postcode alone does not identify Mypolonga. Browse other postcodes in South Australia, or widen the search to every Australian postcode.