Home Postcodes by state SA 5012 Postcode 5012 5012 is the postcode for 4 localities in SA: Athol Park, Mansfield Park, Woodville Gardens and Woodville North. Localities with postcode 5012Athol ParkSAMansfield ParkSAWoodville GardensSAWoodville NorthSA Postcode 5012 State or territory South Australia (SA) Localities 4 Council area Charles Sturt; Port Adelaide Enfield Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5011 · Postcode 5013