Home Postcodes by state SA 5163 Postcode 5163 5163 is the postcode for 4 localities in SA: Hackham, Hackham West, Huntfield Heights and Onkaparinga Hills. Localities with postcode 5163HackhamSAHackham WestSAHuntfield HeightsSAOnkaparinga HillsSA Postcode 5163 State or territory South Australia (SA) Localities 4 Council area Onkaparinga Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5162 · Postcode 5164