Home Postcodes by state SA 5075 Postcode 5075 5075 is the postcode for 2 localities in SA: Dernancourt and Paradise. Localities with postcode 5075DernancourtSAParadiseSA Postcode 5075 State or territory South Australia (SA) Localities 2 Council area Tea Tree Gully; Campbelltown Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5074 · Postcode 5076