Home Postcodes by state SA 5415 Postcode 5415 5415 is the postcode for 2 localities in SA: Mintaro and Stanley. Localities with postcode 5415MintaroSAStanleySA Postcode 5415 State or territory South Australia (SA) Localities 2 Council area Clare and Gilbert Valleys Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5414 · Postcode 5416