Home Postcode finder SA Butler Butler postcode SA Butler is a locality in South Australia covered by postcode 5605. Postcode 5605 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Butler business listing Be the first listing in Butler Common questionsWhat is the postcode for Butler?Butler, SA has the postcode 5605.What state is Butler in?Butler is in South Australia (SA).Does postcode 5605 cover more than one suburb?Yes. Postcode 5605 covers 2 localities, so the postcode alone does not identify Butler. Browse other postcodes in South Australia, or widen the search to every Australian postcode.