Home Postcodes by state SA 5271 Postcode 5271 5271 is the postcode for 18 localities in SA: Bool Lagoon, Cadgee, Joanna, Keppoch, Koppamurra, Laurie Park and 12 more. Localities with postcode 5271Bool LagoonSACadgeeSAJoannaSAKeppochSAKoppamurraSALaurie ParkSALochaberSAMarcollatSAMount LightSAMoyhallSANaracoorteSAPadthawaySASpenceSAStewart RangeSAStruanSAThe GapSAWild Dog ValleySAWrattonbullySA Postcode 5271 State or territory South Australia (SA) Localities 18 Council area Naracoorte Lucindale; Kingston; Tatiara Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5270 · Postcode 5272