Home Postcodes by state SA 5048 Postcode 5048 5048 is the postcode for 5 localities in SA: Brighton, Dover Gardens, Hove, North Brighton and South Brighton. Localities with postcode 5048BrightonSADover GardensSAHoveSANorth BrightonSASouth BrightonSA Postcode 5048 State or territory South Australia (SA) Localities 5 Council area Holdfast Bay; Marion Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5047 · Postcode 5049