Home Postcodes by state SA 5094 Postcode 5094 5094 is the postcode for 3 localities in SA: Cavan, Dry Creek and Gepps Cross. Localities with postcode 5094CavanSADry CreekSAGepps CrossSA Postcode 5094 State or territory South Australia (SA) Localities 3 Council area Salisbury; Port Adelaide Enfield Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5093 · Postcode 5095