yallunda-flat postcode sa Home ›› Postcode Finder ›› SA ›› Yallunda-Flat Yallunda Flat local listingsThe suburb of Yallunda Flat is located in SA and has a postcode of 5607. Free yallunda flat business listing! Get the first free listing in yallunda flat! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.