Home Postcodes by state SA 5732 Postcode 5732 5732 is the postcode for 2 localities in SA: Copley and Nepabunna. Localities with postcode 5732CopleySANepabunnaSA Postcode 5732 State or territory South Australia (SA) Localities 2 Council area Unincorporated SA Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5731 · Postcode 5733