Home Postcodes by state SA 5160 Postcode 5160 5160 is the postcode for 2 localities in SA: Lonsdale and Port Stanvac. Localities with postcode 5160LonsdaleSAPort StanvacSA Postcode 5160 State or territory South Australia (SA) Localities 2 Council area Onkaparinga Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5159 · Postcode 5161