Home Postcodes by state SA 5050 Postcode 5050 5050 is the postcode for 2 localities in SA: Bellevue Heights and Eden Hills. Localities with postcode 5050Bellevue HeightsSAEden HillsSA Postcode 5050 State or territory South Australia (SA) Localities 2 Council area Mitcham Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5049 · Postcode 5051