Home Postcode finder SA Colley Colley postcode SA Colley is a locality in South Australia covered by postcode 5671. Postcode 5671 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Colley business listing Be the first listing in Colley Common questionsWhat is the postcode for Colley?Colley, SA has the postcode 5671.What state is Colley in?Colley is in South Australia (SA).Does postcode 5671 cover more than one suburb?Yes. Postcode 5671 covers 8 localities, so the postcode alone does not identify Colley. Browse other postcodes in South Australia, or widen the search to every Australian postcode.