south-hummocks postcode sa Home ›› Postcode Finder ›› SA ›› South-Hummocks South Hummocks local listingsThe suburb of South Hummocks is located in SA and has a postcode of 5550. Free south hummocks business listing! Get the first free listing in south hummocks! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.