Home Postcodes by state SA 5575 Postcode 5575 5575 is the postcode for 17 localities in SA: Bluff Beach, Brentwood, Corny Point, Couch Beach, Hardwicke Bay, Koolywurtie and 11 more. Localities with postcode 5575Bluff BeachSABrentwoodSACorny PointSACouch BeachSAHardwicke BaySAKoolywurtieSAMarion BaySAMinlatonSAPoint SouttarSAPoint TurtonSAPort JuliaSAPort RickabySARamsaySAStenhouse BaySAThe PinesSAWhite HutSAWool BaySA Postcode 5575 State or territory South Australia (SA) Localities 17 Council area Yorke Peninsula Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5573 · Postcode 5576