Home Postcodes by state SA 5044 Postcode 5044 5044 is the postcode for 2 localities in SA: Glengowrie and Somerton Park. Localities with postcode 5044GlengowrieSASomerton ParkSA Postcode 5044 State or territory South Australia (SA) Localities 2 Council area Marion; Holdfast Bay Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5043 · Postcode 5045