Home Postcodes by state SA 5084 Postcode 5084 5084 is the postcode for 4 localities in SA: Blair Athol, Blair Athol West, Kilburn and Kilburn North. Localities with postcode 5084Blair AtholSABlair Athol WestSAKilburnSAKilburn NorthSA Postcode 5084 State or territory South Australia (SA) Localities 4 Council area Port Adelaide Enfield Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5083 · Postcode 5085