Home Postcode finder SA Netherton Netherton postcode SA Netherton is a locality in South Australia covered by postcode 5301. Postcode 5301 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Netherton business listing Be the first listing in Netherton Common questionsWhat is the postcode for Netherton?Netherton, SA has the postcode 5301.What state is Netherton in?Netherton is in South Australia (SA).Does postcode 5301 cover more than one suburb?Yes. Postcode 5301 covers 9 localities, so the postcode alone does not identify Netherton. Browse other postcodes in South Australia, or widen the search to every Australian postcode.