greenock postcode sa Home ›› Postcode Finder ›› SA ›› Greenock Greenock local listingsThe suburb of Greenock is located in SA and has a postcode of 5360. Free greenock business listing! 1Greenock Primary SchoolC/o Post Office 08 85628011 View more business listings in greenock Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.