keyneton postcode sa Home ›› Postcode Finder ›› SA ›› Keyneton Keyneton local listingsThe suburb of Keyneton is located in SA and has a postcode of 5353. Free keyneton business listing! 1Keyneton Primary SchoolHenschke Rd 08 85648258 View more business listings in keyneton Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.