Home Postcodes by state SA 5082 Postcode 5082 5082 is the postcode for 6 localities in SA: Fitzroy, Ovingham, Prospect, Prospect East, Prospect West and Thorngate. Localities with postcode 5082FitzroySAOvinghamSAProspectSAProspect EastSAProspect WestSAThorngateSA Postcode 5082 State or territory South Australia (SA) Localities 6 Council area Prospect; Mainly Charles Sturt, partly Prospect Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5081 · Postcode 5083