Home Postcode finder SA Mil-Lel Mil-Lel postcode SA Mil-Lel is a locality in South Australia covered by postcode 5291. Postcode 5291 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Mil-Lel business listing Be the first listing in Mil-Lel Common questionsWhat is the postcode for Mil-Lel?Mil-Lel, SA has the postcode 5291.What state is Mil-Lel in?Mil-Lel is in South Australia (SA).Does postcode 5291 cover more than one suburb?Yes. Postcode 5291 covers 34 localities, so the postcode alone does not identify Mil-Lel. Browse other postcodes in South Australia, or widen the search to every Australian postcode.