koolunga postcode sa Home ›› Postcode Finder ›› SA ›› Koolunga Koolunga local listingsThe suburb of Koolunga is located in SA and has a postcode of 5464. Free koolunga business listing! 1Koolunga Primary SchoolValley Rd 08 88466052 View more business listings in koolunga Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.