Home Postcodes by state SA 5419 Postcode 5419 5419 is the postcode for 7 localities in SA: Canowie, Hallett, Mount Bryan East, Pine Creek, Ulooloo, Willalo and 1 more. Localities with postcode 5419CanowieSAHallettSAMount Bryan EastSAPine CreekSAUloolooSAWillaloSAWonnaSA Postcode 5419 State or territory South Australia (SA) Localities 7 Council area Goyder Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5418 · Postcode 5420