Home Postcodes by state SA 5278 Postcode 5278 5278 is the postcode for 4 localities in SA: Kalangadoo, Krongart, Moerlong and Wepar. Localities with postcode 5278KalangadooSAKrongartSAMoerlongSAWeparSA Postcode 5278 State or territory South Australia (SA) Localities 4 Council area Wattle Range; Mainly Wattle Range, partly Grant Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5277 · Postcode 5279