Home Postcode finder SA Lowan Vale Lowan Vale postcode SA Lowan Vale is a locality in South Australia covered by postcode 5268. Postcode 5268 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Lowan Vale business listing Be the first listing in Lowan Vale Common questionsWhat is the postcode for Lowan Vale?Lowan Vale, SA has the postcode 5268.What state is Lowan Vale in?Lowan Vale is in South Australia (SA).Does postcode 5268 cover more than one suburb?Yes. Postcode 5268 covers 8 localities, so the postcode alone does not identify Lowan Vale. Browse other postcodes in South Australia, or widen the search to every Australian postcode.