Home Postcodes by state SA 5273 Postcode 5273 5273 is the postcode for Avenue Range, SA. Localities with postcode 5273Avenue RangeSA Postcode 5273 State or territory South Australia (SA) Localities 1 Council area Mainly Naracoorte Lucindale, partly Kingston Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5272 · Postcode 5275