Home Postcodes by state SA 5237 Postcode 5237 5237 is the postcode for 4 localities in SA: Apamurra, Milendella, Palmer and Sanderston. Localities with postcode 5237ApamurraSAMilendellaSAPalmerSASanderstonSA Postcode 5237 State or territory South Australia (SA) Localities 4 Council area Mid Murray Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5236 · Postcode 5238