Home Postcode finder SA Coomandook Coomandook postcode SA Coomandook is a locality in South Australia covered by postcode 5261. Postcode 5261 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Coomandook business listing More business listings in Coomandook Businesses in CoomandookCoomandook Area School08 85733007 Common questionsWhat is the postcode for Coomandook?Coomandook, SA has the postcode 5261.What state is Coomandook in?Coomandook is in South Australia (SA).Does postcode 5261 cover more than one suburb?Yes. Postcode 5261 covers 5 localities, so the postcode alone does not identify Coomandook. Browse other postcodes in South Australia, or widen the search to every Australian postcode.