Home Postcodes by state SA 5583 Postcode 5583 5583 is the postcode for 2 localities in SA: Coobowie and Edithburgh. Localities with postcode 5583CoobowieSAEdithburghSA Postcode 5583 State or territory South Australia (SA) Localities 2 Council area Yorke Peninsula Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5582 · Postcode 5600