Home Postcode finder SA Cowell Cowell postcode SA Cowell is a locality in South Australia covered by postcode 5602. Postcode 5602 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Cowell business listing More business listings in Cowell Businesses in CowellCowell Area School42 Story Rd · 08 86292150 Common questionsWhat is the postcode for Cowell?Cowell, SA has the postcode 5602.What state is Cowell in?Cowell is in South Australia (SA).Does postcode 5602 cover more than one suburb?Yes. Postcode 5602 covers 8 localities, so the postcode alone does not identify Cowell. Browse other postcodes in South Australia, or widen the search to every Australian postcode.