Home Postcodes by state SA 5031 Postcode 5031 5031 is the postcode for 5 localities in SA: Mile End, Mile End South, Thebarton, Torrensville and Torrensville Plaza. Localities with postcode 5031Mile EndSAMile End SouthSAThebartonSATorrensvilleSATorrensville PlazaSA Postcode 5031 State or territory South Australia (SA) Localities 5 Council area West Torrens Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5025 · Postcode 5032