Home Postcodes by state SA 5046 Postcode 5046 5046 is the postcode for 3 localities in SA: Oaklands Park, Warradale and Warradale North. Localities with postcode 5046Oaklands ParkSAWarradaleSAWarradale NorthSA Postcode 5046 State or territory South Australia (SA) Localities 3 Council area Marion Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5045 · Postcode 5047