flaxman-valley postcode sa Home ›› Postcode Finder ›› SA ›› Flaxman-Valley Flaxman Valley local listingsThe suburb of Flaxman Valley is located in SA and has a postcode of 5353. Free flaxman valley business listing! Get the first free listing in flaxman valley! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.