coomandook postcode sa Home ›› Postcode Finder ›› SA ›› Coomandook Coomandook local listingsThe suburb of Coomandook is located in SA and has a postcode of 5261. Free coomandook business listing! 1Coomandook Area School 08 85733007 View more business listings in coomandook Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.