Home Postcodes by state SA 5308 Postcode 5308 5308 is the postcode for 6 localities in SA: Copeville, Galga, Kalyan, Mantung, Mercunda and Perponda. Localities with postcode 5308CopevilleSAGalgaSAKalyanSAMantungSAMercundaSAPerpondaSA Postcode 5308 State or territory South Australia (SA) Localities 6 Council area Karoonda East Murray; Mainly Karoonda East Murray, partly Loxton Waikerie Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5307 · Postcode 5309