Postcode 5204 This postcode covers more than one locality. Which one are you after? Carrickalinga South Australia LGA: Yankalilla Cape Jervis South Australia LGA: Yankalilla Hay Flat South Australia LGA: Yankalilla Rapid Bay South Australia LGA: Yankalilla Second Valley South Australia LGA: Yankalilla Wirrina Cove South Australia LGA: Yankalilla