flagstaff-hill postcode sa Home ›› Postcode Finder ›› SA ›› Flagstaff-Hill Flagstaff Hill local listingsThe suburb of Flagstaff Hill is located in SA and has a postcode of 5159. Free flagstaff hill business listing! Get the first free listing in flagstaff hill! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.