Home Postcodes by state SA 5572 Postcode 5572 5572 is the postcode for 2 localities in SA: Arthurton and Port Arthur. Localities with postcode 5572ArthurtonSAPort ArthurSA Postcode 5572 State or territory South Australia (SA) Localities 2 Council area Yorke Peninsula Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5571 · Postcode 5573