Home Postcodes by state SA 5156 Postcode 5156 5156 is the postcode for Upper Sturt, SA. Localities with postcode 5156Upper SturtSA Postcode 5156 State or territory South Australia (SA) Localities 1 Council area Mainly Adelaide Hills, partly Mitcham Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5155 · Postcode 5157