sefton-park postcode sa Home ›› Postcode Finder ›› SA ›› Sefton-Park Sefton Park local listingsThe suburb of Sefton Park is located in SA and has a postcode of 5083. Free sefton park business listing! Get the first free listing in sefton park! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.