Home Postcodes by state SA 5654 Postcode 5654 5654 is the postcode for 4 localities in SA: Cocata, Karcultaby, Minnipa and Mount Damper. Localities with postcode 5654CocataSAKarcultabySAMinnipaSAMount DamperSA Postcode 5654 State or territory South Australia (SA) Localities 4 Council area Wudinna; Mainly Streaky Bay, partly Wudinna; Mainly Wudinna, partly Elliston Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5653 · Postcode 5655